Upcoming Events

20 Oct 2024;
01:00PM - 04:00PM
October in-person and zoom meeting featuring Connor Smith presenting Utrecht Botanic Garden
10 Nov 2024;
01:00PM - 04:00PM
November in-person and Zoom meeting featuring Professor James Eckenwalder presenting Trees in the Foreground
08 Dec 2024;
01:00PM - 04:00PM
December In-person and Zoom meeting featuring Laura Caddy presenting The Lonbrunner Alpine Garden at UBC Botanical Garden

What's New!

Plant of the Month

Toronto Botanical Gardens

Our in person meeting are held at the TBG

Germination Guide Instructions

Find the plant you are searching for by using the search box. Select the target to the right of the plant name to see full germination details. Click on the name to open a Google search of the plant.

Download a copy of our codes.

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ORGHPS's Germination Guide
Plant Name Full
Info		 Viable Germ
Code		 More
Info		 Special
Info
Abelmoschus manihot K
Abies koreana 'Silberlocke' J 7
Abronia nana A 6 7
Acacia podalyriifolia A 6 7
Acacia species A 6 7
Acacia williamsonii A 6 7 *
Acaena adscendens A
Acaena buchananii E
Acaena caesiglauca E
Acaena glaucophylla K *
Acaena hieronymi A
Acaena magellanica E
Acaena microphylla E
Acaena microphylla 'Kupferteppich' E
Acaena myriophylla A
Acaena novae-zelandiae E
Acaena pinnatifida E
Acaena saccaticupula E 2 7
Acaena saccaticupula 'Blue Haze' E 2 7
Acaena sericea A
Acaena williamsonii E
Acantholimon all species B *
Acantholimon araxanum A *
Acantholimon armenum A *
Acantholimon avenaceum A
Acantholimon bracteatum A *
Acantholimon bracteatum var. capitatum A *
Acantholimon caryophyllaceum A *
Acantholimon compactum ! B *
Acantholimon glumaceum A *
Acantholimon hohenackeri ! B *
Acantholimon karelinii A *
Acantholimon litvinovii L
Acantholimon reflexifolium A *
Acantholimon saxifragiforme A *
Acantholimon sp. ! B *
Acantholimon ulicinum ! ? *
Acanthopanax sessiliflorus *
Acanthopanax sessiliflorus var. parviceps *
Acanthus hungaricus E 7
Acanthus mollis F 7
Acanthus mollis Latifolius Group F 7
Acanthus spinosus F 7
Acer amurensis H 7
Acer argutum L 7
Acer barbinerve G
Acer cappadocicum ssp. divergens J
Acer carpinifolium H 7
Acer caudatum ! G 7
Acer caudatum subsp. ukurunduense ! G 7
Acer davidii L
Acer ginnala G 7
Acer glabrum H 7
Acer glabrum var. douglasii H 7
Acer griseum G 6 7 *
Acer grosseri var. hersii G
Acer japonicum G *
Acer japonicum 'Aconitifolium' L
Acer japonicum f. 'Aconitifolium' L
Acer japonicum var. dissectum G *
Acer mandshuricum G 3 6 7 *
Acer palmatum G
Acer palmatum 'Dissectum' G
Acer palmatum 'Dissectum Viridis' G
Acer palmatum 'Emperor I' G
Acer palmatum 'Koto Ito' G
Acer palmatum 'Linearilobum' G
Acer palmatum 'Osakazuki' G
Acer palmatum 'Red Pygmy' G
Acer palmatum 'Shigi-tatsu-sawa' G
Acer palmatum 'Yasemin' G 7
Acer palmatum f. scolopendrifolium G 7
Acer palmatum var. dissectum (Dissectum Atropurpureum Group) G
Acer pensylvanicum L *
Acer pictum subsp. mono ! G 7
Acer pseudosieboldianum A 3 *
Acer saccharum subsp. nigrum G 7
Acer sieboldianum ! L *
Acer spicatum ! L 7
Acer tataricum 'Hot Wings' L 7
Acer tataricum subsp. ginnala L 7
Acer tegmentosum F *
Acer tetramerum ! L *
Acer triflorum D 7
Acer truncatum G 7
Acer tschonoskii subsp. koreanum ! G 7
Acer ukurunduense L 7
Achillea ageratifolia B 3
Achillea ageratifolia spp. aizoon B 3
Achillea ageratum A 3 *
Achillea alpina A
Achillea Anthea' A 3
Achillea asiatica B 3
Achillea biserrata A
Achillea clavennae K
Achillea clavennae var. intercedens K
Achillea filipendulina A 3
Achillea filipendulina 'Gold Plate' A 3
Achillea grandiflora A 3
Achillea holosericea A
Achillea huteri A
Achillea macrophylla A 3 4
Achillea millefolium A 3
Achillea millefolium 'Cassis' A
Achillea Moonshine' A 3
Achillea Moonwalker' A 3 *
Achillea nana B
Achillea nobilis subsp. neilreichii A 3
Achillea ptarmica A 3
Achillea ptarmica subsp. pyrenaica A 3
Achillea ptarmicifolia A 3
Achillea pyrenaica A 3
Achillea Schwellenburg' A 3
Achillea sibirica A 3
Achillea sibirica 'Stephanie Cohen' A 3
Achillea sibirica subsp. camtschatica A 3
Achillea sp. ?
Achillea Summer Pastels Group A 3
Achillea tomentosa A
Achillea tomentosa 'Aurea' A
Achillea umbellata A 1
Achillea x kellereri B 3
Achillea x lewisii 'King Edward' A 3
Achlys japonica L
Achnatherum calamagrostis A
Achnatherum extremiorientale A
Acidanthera bicolor K
Acidanthera sp. ?
Acinos alpinus A 3
Acis autumnalis A
Acis nicaeensis A
Acmella oleracea A
Aconitum alboviolaceum ! 4 *
Aconitum all species ! *
Aconitum altaicum ! K 3 *
Aconitum anthora ! *
Aconitum baicalense ! *
Aconitum bakeri ! *
Aconitum barbatum ! *
Aconitum barbatum ! *
Aconitum Bressingham Spire' ! *
Aconitum carmichaelii ! J *
Aconitum carmichaelii 'Arendsii' (Arendsii Group) ! J *
Aconitum columbianum ! *
Aconitum cymbulatum ! 4 *
Aconitum czekanovskyi ! *
Aconitum excelsum ! *
Aconitum ferox ! D *
Aconitum firmum ! *
Aconitum fischeri ! *
Aconitum gmelinii ! *
Aconitum hemsleyanum ! *
Aconitum hemsleyanum 'Red Wine' ! *
Aconitum heterophyllum ! J 2 4 7 *
Aconitum Ivorine' ! *
Aconitum jaluense ! *
Aconitum japonicum ! L *
Aconitum japonicum ! *
Aconitum kirinense ! *
Aconitum kitadakense ! *
Aconitum krylovii ! 4 *
Aconitum kusnezoffii ! 4 *
Aconitum lamarckii ! *
Aconitum lasiostomum ! *
Aconitum lycoctonum ! *
Aconitum lycoctonum ssp moldavicum ! *
Aconitum lycoctonum subsp. lycoctonum ! *
Aconitum lycoctonum subsp. neapolitanum ! *
Aconitum lycoctonum subsp. vulparia ! *
Aconitum moldavicum ! L *
Aconitum napellus ! *
Aconitum napellus 'Album' ! *
Aconitum napellus 'Schneewittchen' ! *
Aconitum napellus ssp grignae ! *
Aconitum nemorum ! *
Aconitum orientale ! L 4 *
Aconitum sachalinense ! J *
Aconitum sachalinense subsp. yezoense ! J *
Aconitum septentrionale ! *
Aconitum sinomontanum ! H *
Aconitum sp. ! *
Aconitum Stainless Steel' ! *
Aconitum tauricum ! *
Aconitum uncinatum ! *
Aconitum variegatum ! E *
Aconitum volubile ! J *
Aconitum vulparia ! *
Aconitum x cammarum 'Pink Sensation' ! *
Acorus calamus *
Actaea alba ! E 8 *
Actaea alba f. rubrocarpa ! E 8 *
Actaea all species *
Actaea americana E
Actaea asiatica L *
Actaea cimicifuga ! C
Actaea dahurica D 8 *
Actaea erythrocarpa E 8 *
Actaea europaea ! C
Actaea foetida ! C
Actaea japonica C
Actaea pachypoda ! H 8 *
Actaea pachypoda 'Misty Blue' ! H 8 *
Actaea pachypoda f. rubrocarpa ! H 8 *
Actaea podocarpa L *
Actaea racemosa ! C
Actaea rubifolia C *
Actaea rubra ! H 8 *
Actaea rubra f. neglecta ! H 8 *
Actaea simplex ! E
Actaea simplex 'Black Negligee' (Atropurpurea Group) ! E
Actaea simplex 'Brunette' C *
Actaea simplex 'Hillside Black Beauty' C *
Actaea simplex 'Variegata' ! E
Actaea sp. ! J *
Actaea spicata ! C 8 *
Actaea spicata var. alba ! C 8 *
Actinea herbacea A
Actinidia kolomikta G *
Adelocaryum anchusoides A
Adelocaryum coelestinum A 3
Adenophora bulleyana A
Adenophora confusa F
Adenophora himalayana F
Adenophora hoffmannii ?
Adenophora kurilensis A 3
Adenophora liliifolia A 3
Adenophora nikoensis F
Adenophora remotiflora K 3 *
Adenophora sp. F
Adenophora stricta subsp. confusa F
Adenophora tashiroi J
Adenophora triphylla F
Adenophora triphylla var. japonica F
Adenophora verticillata F
Adenostyles leucophylla A
Adiantum pedatum A *
Adlumia asiatica ? 3
Adlumia fungosa A 3
Adonis aestivalis ! A *
Adonis all species ! *
Adonis amurensis ! L *
Adonis amurensis 'Genshu Fukujuso' ! L *
Adonis amurensis var. pseudoamurensis ! L *
Adonis apennina ! A *
Adonis cyllenea ! A *
Adonis Fukujukai' ! L *
Adonis pseudoamurensis ! L *
Adonis pyrenaica ! L *
Adonis ramosa ! L *
Adonis sibirica ! A *
Adonis species ! L *
Adonis vernalis ! L *
Aesculus glabra ! G *
Aesculus parviflora ! L
Aesculus pavia ! A *
Aethionema armenum A
Aethionema armenum 'Mavis Holmes' A
Aethionema cordifolium A
Aethionema diastrophis A
Aethionema glaucescens A
Aethionema glaucinum A
Aethionema grandiflorum A
Aethionema iberideum A
Aethionema most species A
Aethionema oppositifolium G
Aethionema saxatile K
Aethionema schistosum A
Aethionema sp. A
Aethionema speciosum L
Aethionema subulatum F
Aethionema Warley Rose' A
Aethionema x warleyense A
Agalinus sp. K
Agapanthus 'Baby Blue' A *
Agapanthus 'Blue Danube' A *
Agapanthus 'Dazzler' A *
Agapanthus 'Streamline' A *
Agapanthus 'Twister' A *
Agapanthus 'White Heaven' A *
Agapanthus 'White Swan' A *
Agapanthus Blue Triumphator' A *
Agapanthus Donau' A *
Agapanthus Headborne hybrid ! A *
Agapanthus hybrid A *
Agapanthus Northern Star' A *
Agapanthus Peter Pan' A *
Agapanthus praecox A *
Agapanthus Queen Anne' A *
Agapanthus Rotterdam' A *
Agapanthus Septemberhemel' A *
Agapanthus Silver Moon' A *
Agapanthus sp. A *
Agastache 'Astell Indigo' A
Agastache 'Blue Fortune' A
Agastache 'Bronze Foliage' A
Agastache all species *
Agastache aurantiaca 'Apricot Sprite' A
Agastache cana A
Agastache cana 'Sonoran Sunset' A
Agastache foeniculum A 3
Agastache foeniculum 'Alba' A
Agastache foeniculum 'Aureum' A
Agastache foeniculum 'Blue Fountain' A 3
Agastache foeniculum 'Golden Jubilee' K 3
Agastache hybrid A
Agastache mexicana A
Agastache mexicana 'Rosea' A
Agastache Morello' A
Agastache neomexicana A
Agastache nepetoides A 3
Agastache pallidiflora subsp. neomexicana A
Agastache pink Pop' A
Agastache pringlei A
Agastache rugosa K
Agastache rugosa 'Golden Jubilee' K 3
Agastache rugosa 'Liquorice Blue' A
Agastache rugosa f. albiflora A
Agastache rupestris A 3
Agastache rupestris 'Apache Sunset' A 3
Agastache scrophulariifolia A 3
Agastache sp. A *
Agastache urticifolia A
Agastache wrightii A
Agave parryi A 3
Ageratina altissima G
Ageratina altissima 'Chocolate' G
Ageratina occidentalis A
Ageratum houstonianum A
Ageratum houstonianum 'Leilani Blue' A
Ageratum hybrid A
Ageratum sp. A
Agrimonia eupatoria B
Agrostemma githago K
Agrostemma githago 'Ocean Pearl' K
Agrostemma sp. K
Agrostis nebulosa A *
Aguilegia vulgaris 'Winky Blue' A
Ajania tibetica K
Ajuga pyramidalis A
Akebia quinata G
Albizia julibrissin A 6 7
Albizia julibrissin 'Summer Chocolate' A 6 7
Albizia julibrissin var. rosea A 6 7
Albuca humilis A 2
Albuca nelsonii ! A
Albuca shawii A 3
Albuca sp. ! ? *
Albuca tenuifolia A 3
Alcea all species B 2
Alcea apterocarpa A
Alcea East Coast Hybrid B 2
Alcea ficifolia A 2
Alcea froloviana A 6
Alcea hohenackeri A 6
Alcea kardiya K
Alcea pallida B
Alcea rosea A 3
Alcea rosea 'Black Watchman' B 2
Alcea rosea 'Blacknight' (Spotlight Series) B 2
Alcea rosea 'Fiesta Time' B 2
Alcea rosea 'Halo Cerise' A
Alcea rosea 'Mars Magic' A
Alcea rosea 'Nigra ' B 2
Alcea rosea 'Queeny Purple' B 2
Alcea rosea 'The Watchman' B 2
Alcea rosea Chater's Double Group B 2
Alcea rosea East Coast Hybrid A 4
Alcea rosea ssp. ficifolia B 2
Alcea rugosa A
Alcea sp. B 2
Alchemilla alpigena A 3 *
Alchemilla alpina ? *
Alchemilla erythropoda B
Alchemilla faeroensis var. pumila J
Alchemilla glaucescens A
Alchemilla glaucescens subsp. pubescens A
Alchemilla hoppeana A 3 *
Alchemilla hybrida A
Alchemilla mollis A 3
Alchemilla monticola K 3 *
Alchemilla most species *
Alchemilla plicatula A 3
Alchemilla pratensis K 3 *
Alchemilla sp. ?
Alchemilla velebitica A 3 *
Alchemilla visianii A 3 *
Alchemilla vulgaris A 3 *
Alfredia cernua A
Aliciella haydenii L
Aliciella subnuda L
Alisma plantago ! B *
Alisma plantago-aquatica ! B *
Alisma subcordatum L 6 7 *
Alisma triviale ! B *
Allium acuminatum J
Allium aflatunense E
Allium akaka A
Allium alataviense L
Allium all species *
Allium altaicum A
Allium altissimum K
Allium amabile J
Allium ampeloprasum A
Allium amphibolum A
Allium angulosum J
Allium atropurpureum J
Allium azureum A
Allium backhousianum L
Allium baissunense ?
Allium caeruleum A
Allium cardiostemon 'Purple Gem' ?
Allium carinatum F
Allium carinatum subsp. pulchellum F
Allium carinatum subsp. pulchellum f. album F
Allium carolinianum A
Allium cernuum A
Allium cernuum 'Graton' A
Allium cernuum 'Leo' A
Allium cernuum f. alba A
Allium cernuum var. obtusum A
Allium chrysanthum L
Allium cristophii J
Allium cyaneum F
Allium cyathophorum J
Allium cyathophorum var. farreri J
Allium falcifolium A
Allium farreri J
Allium fistulosum A
Allium flavum A
Allium flavum 'Blue Leaf' J
Allium flavum 'Minor' J
Allium flavum subsp. tauricum J
Allium flavum var. minus J
Allium forrestii G
Allium geyeri A 2
Allium giganteum G
Allium Globemaster' J
Allium gooddingii A 2
Allium grayi A
Allium gultschense J
Allium gunibicum L
Allium Hair' G
Allium hirtifolium G 6 *
Allium hollandicum G 6 *
Allium hollandicum 'Purple Sensation' G 6 *
Allium hyalinum J
Allium hybrid ?
Allium hymenorhizum ?
Allium insubricum J
Allium jajlae ?
Allium jesdianum E
Allium kansuense A
Allium karataviense ! H *
Allium karataviense 'Ivory Queen' ! H *
Allium karataviense 'Red Giant' ! H *
Allium karataviense subsp. henrikii ! H *
Allium kokanicum A
Allium komarovianum A
Allium komarowii F
Allium lusitanicum L
Allium luteolum J
Allium luteum A
Allium mairei var. amabile A
Allium Mars' B
Allium Millenium' L
Allium moly H *
Allium Mount Everest' J
Allium murrayanum J
Allium narcissiflorum A
Allium neapolitanum ! J
Allium nevskianum J
Allium nigrum E
Allium nutans A
Allium nutans x senescens A
Allium obliquum A
Allium ochotense A
Allium ochroleucum J
Allium oreophilum J
Allium oschaninii A
Allium ostrowskianum J
Allium paczoskianum A
Allium paniculatum F
Allium perdulce J
Allium prostratum G
Allium pseudojaponicum ?
Allium pskemense J
Allium pulchellum F
Allium purpureum G
Allium ramosum A *
Allium rosenbachianum J
Allium roseum J
Allium roseum 'Album' K
Allium rotundum A
Allium rotundum subsp. jajlae J
Allium sacculiferum A
Allium sarawschanicum ?
Allium saxatile J
Allium schoenoprasum A
Allium schoenoprasum 'Bode Pastel' A
Allium schoenoprasum 'Curly Mauves' A
Allium schoenoprasum 'Forescate' A
Allium schoenoprasum f. albiflorum A
Allium schubertii A
Allium senescens G
Allium senescens 'Blue Eddy' G
Allium senescens subsp. glaucum G
Allium senescens subsp. montanum G
Allium senescens subsp. senescens G
Allium senescens x nutans A
Allium serawschanicum L
Allium Setlife' J
Allium sewerzowii F
Allium siculum B
Allium sikkimense A
Allium Silver Spring' A
Allium siskiyouense F
Allium sp. J
Allium sphaerocephalum G
Allium splendens A
Allium stellatum A
Allium stellerianum A
Allium stipitatum G 6 *
Allium stipitatum 'Mount Everest' F
Allium strictum J
Allium Summer Beauty' G
Allium Summer Pink' J
Allium suworowii F 3 *
Allium sylvestris J
Allium szovitsii L
Allium tanguticum A
Allium textile J
Allium thunbergii J
Allium thunbergii 'Ozawa ' J
Allium togashii J
Allium tricoccum ! E
Allium tripedale J
Allium tschimganicum ?
Allium tuberosum A
Allium uliginosum A
Allium unifolium J
Allium ursinum ! J
Allium victorialis ! A
Allium victorialis var. platyphyllum ! A
Allium vineale G
Allium zebdanense J
Alnus japonica A 3
Aloe marlothii A 3
Aloinopsis spathulata A
Alonsoa linearis A
Alstroemeria all species C 7 *
Alstroemeria aurantiaca C 7 *
Alstroemeria aurea C 7 *
Alstroemeria aurea 'Lutea' C 7 *
Alstroemeria Dr. Salter's Hybrids' J *
Alstroemeria hybrids C 2 7 *
Alstroemeria ligtu hybrids C 2 7 *
Alstroemeria lutea A 7
Alstroemeria presliana subsp. australis ?
Alstroemeria psittacina C 7 *
Alstroemeria sp. C 7 *
Alternanthera ficoidea A
Althaea armeniaca A
Althaea officinalis A
Althaea rosea A
Althaea rugosa B 2
Althaea taurinensis A
Alyssoides all species A
Alyssoides graeca B
Alyssoides utriculata B
Alyssum alyssoides A
Alyssum arcticum A
Alyssum argenteum A
Alyssum bertolonii subsp. bertolonii A
Alyssum caespitosum A 3
Alyssum cuneifolium B
Alyssum dagestanicum A 3
Alyssum fischerianum A 3
Alyssum Gold Crest' A
Alyssum handelii A 3
Alyssum idaeum A 3
Alyssum lenense A 3
Alyssum macrocarpum A
Alyssum markgrafii A 3
Alyssum montanum A
Alyssum most species A
Alyssum ovirense A
Alyssum oxycarpum A
Alyssum propinquum A
Alyssum pulvinare J
Alyssum saxatilis A
Alyssum serpyllifolium A
Alyssum sp. A
Alyssum spinosum A 3
Alyssum spinosum 'Roseum' A 3
Alyssum stribrnyi A
Alyssum wulfenianum A
Amaranthus caudatus A
Amaranthus cruentus A *
Amaranthus cruentus ?Velvet Curtains? A *
Amaranthus hybrid A *
Amaranthus hybridus A *
Amaranthus hypochondriacus A *
Amaranthus sp. A *
Amaryllis sp. A *
Amberboa muricata A
Amelanchier canadensis *
Amianthium muscitoxicum C
Ammi majus A 2
Ammi visnaga A
Ammi visnaga 'Green Mist' A
Amorpha canescens A 6 7
Amorpha nana G 6
Amorphophallus titanum ! A *
Ampelodesmos mauritanicus A 3
Ampelopsis brevipedunculata G 8
Ampelopsis brevipedunculata 'Variegata' G 8
Ampelopsis brevipedunculata var. maximowiczii G 8
Ampelopsis glandulosa var. brevipedunculata G 8
Amphicarpaea bracteata A 7
Amphicarpaea bracteata v. comosa A 7
Amsonia ciliata 'Halfway to Arkansas' L 7
Amsonia ellipsoides G
Amsonia elliptica C
Amsonia hubrichtii J
Amsonia illustris F
Amsonia jonesii A 3
Amsonia ludoviciana F
Amsonia orientalis G
Amsonia sp. F
Amsonia tabernaemontana G
Amsonia tabernaemontana 'Blue Ice' G
Amsonia tabernaemontana 'Montana' G
Amsonia tabernaemontana var. salicifolia G
Anacampseros densifolia A
Anacyclus depressus A
Anacyclus pyrethrum A
Anacyclus pyrethrum var. depressus A
Anacyclus pyrethrum var. depressus 'Garden Gnome' A
Anagallis all species *
Anagallis linifolia A
Anagallis monelli A
Anagallis monelli 'Skylover' A
Anagallis monelli subsp. linifolia A
Anaphalis alpicola A
Anaphalis lactea A
Anaphalis margaritacea A
Anaphalis triplinervis A
Anchusa angustifolia A 2
Anchusa azurea A
Anchusa azurea 'Dropmore' A
Anchusa azurea 'Feltham Pride' A
Anchusa capensis A
Anchusa leptophylla A
Anchusa leptophylla subsp. incana A
Anchusa officinalis A 2
Anchusa officinalis 'Angustifolia' A 2
Anchusa sp. A
Andromeda glaucophylla E
Andromeda polifolia K *
Andropogon gerardii A
Andropogon scoparius A
Andropogon ternarius A
Androsace adfinis E 3
Androsace adfinis ssp. brigitanica E 3
Androsace alba A
Androsace albana F
Androsace alpina A *
Androsace amurensis A 3
Androsace armeniaca var. macrantha A
Androsace barbulata A
Androsace brigantiaca E 3
Androsace carnea E 3
Androsace carnea 'Alba' F
Androsace carnea cross E 3
Androsace carnea mix E 3
Androsace carnea subsp. brigantiaca E 3
Androsace carnea subsp. laggeri E 3
Androsace carnea subsp. rosea E 3
Androsace carnea x pyrenaica E 3
Androsace chaixii H 3
Androsace chamaejasme A
Androsace ciliata G
Androsace cylindrica subsp. hirtella J
Androsace darvasica B
Androsace fedtschenkoi J
Androsace filiformis G
Androsace hausmannii ! L
Androsace hedreantha L
Androsace hirtella J
Androsace incana ! A
Androsace lactea H *
Androsace lactiflora A 3
Androsace laevigata L
Androsace lanuginosa E
Androsace mairei E 3
Androsace mathildae F
Androsace maxima A
Androsace Millstream' E 3
Androsace montana ! L
Androsace muscoidea A *
Androsace obtusifolia F
Androsace primuloides G
Androsace pyrenaica F
Androsace rotundifolia A
Androsace salicifolia A 3
Androsace sarmentosa G
Androsace sarmentosa ssp. primuloides G
Androsace sarmentosa subsp.primuloides G
Androsace sempervivoides A 3 *
Androsace septentrionalis A
Androsace septentrionalis ?Star Dust? A
Androsace sericea G
Androsace sp. L
Androsace spinulifera ! A
Androsace strigillosa K
Androsace studiosorum G
Androsace studiosorum 'Salmon's Variety' G
Androsace umbellata A 5
Androsace vandellii A
Androsace villosa A
Androsace villosa subsp. koso-poljanskii A
Androsace villosa var. arachnoidea G
Androsace x pedemontana J
Andryala agardhii A
Andryala integrifolia A
Andryala lanata A
Anemonastrum biarmiense ! A
Anemone alpina ! A
Anemone pulsatilla 'Pearl Bells' ! A
Anemone aconitifolia ! G
Anemone alpina ! A
Anemone alpina ssp apiifolia ! A
Anemone altaica ! A
Anemone baicalensis ! A
Anemone baldensis ! A
Anemone barbulata A
Anemone biarmiensis ! A
Anemone blanda A
Anemone canadensis ! E
Anemone caroliniana A
Anemone coronaria ! K
Anemone coronaria 'The Bride' ! A
Anemone crinita ! A *
Anemone cylindrica ! A
Anemone demissa ! A
Anemone dichotoma ! ? *
Anemone drummondii ! A
Anemone drummondii var. lithophila ! A
Anemone fasciculata ! L
Anemone flavescens ! A
Anemone globosa ! A
Anemone Guernica' ! A 2
Anemone halleri ! A
Anemone helvetica ! A
Anemone hortensis A
Anemone hupehensis ! B
Anemone hupehensis var. japonica 'Pamina' ! B
Anemone lesseri ! A 3
Anemone leveillei ! J
Anemone lithophila ! L
Anemone lithophilia ! J
Anemone lutea ! D *
Anemone magellanica ! A
Anemone multifida ! A
Anemone multifida 'Annabella Deep Rose' (Annabella Series) ! A
Anemone multifida 'Major' ! A
Anemone multifida 'Rubra' ! A
Anemone multifida var. globosa ! A
Anemone narcissiflora ! A
Anemone narcissiflora subsp. biarmiensis ! A
Anemone narcissiflora subsp. fasciculata ! A
Anemone nemorosa ! E *
Anemone obtusiloba ! A *
Anemone occidentalis ! A
Anemone palmata ! A
Anemone parviflora ! A
Anemone patens ! J
Anemone patens var. wolfgangiana ! J
Anemone pavonina ! A
Anemone pseudoaltaica ! A
Anemone pulsatilla ! A 9
Anemone pulsatilla 'Papageno' A
Anemone pulsatilla 'Rote Glocke' ! A 9
Anemone ranunculoides ! D *
Anemone riparia ! G
Anemone rivularis ! J
Anemone rivularis var. flore-minore ! A
Anemone rupicola ! A
Anemone slavica ! A
Anemone sp. ! A
Anemone sylvestris ! A
Anemone sylvestris 'Grandiflora' ! A
Anemone transsilvanica ! L
Anemone trifolia ! A *
Anemone trullifolia ! L
Anemone trullifolia 'Lutea' ! L
Anemone tschernaewii ! B
Anemone tuberosa ! C *
Anemone virginiana ! B
Anemone x hybrida 'Honorine Jobert' ! B *
Anemone x hybrida 'Josephine' ! B
Anemone x hybrida 'September Charm' ! B
Anemone x hybrida 'September Sprite' ! B
Anemone x lesseri ! A
Anemonella thalictroides ! G 2 *
Anemonoides baldensis ! A
Anemonopsis macrophylla ! A *
Anemopsis californica A *
Anethum graveolens A
Angelica archangelica A 3
Angelica archangelica subsp. litoralis A 3
Angelica arguta L 7
Angelica atropurpurea ! L 3
Angelica dahurica ! A 3
Angelica gigas ! A 3
Angelica grayi A 3
Angelica hispanica ! L *
Angelica keiskei ! A 3 7
Angelica pachycarpa A
Angelica sachalinensis ! ?
Angelica sinensis ! A 3
Angelica sp. ! C
Angelica sylvestris ! A 3
Angelica sylvestris 'Purpurea' ! A 3
Angelica sylvestris 'Vicar`s Mead' ! A 3
Angelica ursina ! A 3
Angelonia angustifolia A
Anigozanthos manglesii A
Anisodus luridus F
Anomatheca laxa A 3 *
Anomatheca laxa var. alba A 3 *
Anomatheca sp. A
Antennaria alpina F
Antennaria dioica A
Antennaria dioica 'Minima' F
Antennaria dioica 'Nyewoods Variety' F
Antennaria dioica 'Rosea' F
Antennaria dioica 'Rubra' F
Antennaria dioica var. rosea F
Antennaria friesiana F
Antennaria linearifolia A
Antennaria media L 3
Antennaria monocephala A
Antennaria neglecta F
Antennaria neglecta var. gaspensis F
Antennaria neodioica subsp. rosea A
Antennaria pulcherrima A
Antennaria rosea F
Antennaria rosea subsp. confinis A
Antennaria rosea subsp. pulvinata A
Antennaria solitaria A
Antennaria sp. F
Antennaria straminea A
Antennaria suffrutescens A
Anthemis aizoon B 3
Anthemis carpatica A
Anthemis carpatica subsp. pyrethriformis A
Anthemis cretica A
Anthemis cretica subsp. pontica A
Anthemis marschalliana A
Anthemis pauciloba A
Anthemis rudolphiana A
Anthemis sancti-johannis A
Anthemis sp. A
Anthemis sterilis K
Anthemis tinctoria A
Anthemis tinctoria 'Wargrave Variety' A
Anthemis tranzscheliana K
Anthemis triumfettii A
Anthericum liliago A
Anthericum liliastrum L
Anthericum lusitanicum L
Anthericum ramosum J
Anthriscus cerefolium A 1 3
Anthriscus sylvestris 'Ravenswing' A *
Anthyllis coccinea B 3 7
Anthyllis hermanniae L
Anthyllis montana A 6 7 *
Anthyllis montana 'Rubra' A 6 7
Anthyllis montana subsp. atropurpurea ! A 3 7
Anthyllis montana subsp. jacquinii A 6 7
Anthyllis vulneraria ! A 3 7
Anthyllis vulneraria subsp. alpestris A 3 7
Anthyllis vulneraria subsp. pulchella K 6 7
Anthyllis vulneraria var. coccinea ! A 3 7
Anticlea elegans J
Antirrhinum braun-blanquetii A
Antirrhinum Chandelier Lilac Blush' A
Antirrhinum hispanicum A
Antirrhinum majus A
Antirrhinum majus 'Black Prince' A
Antirrhinum majus 'Rocket Red' A
Antirrhinum majus subsp. majus A
Antirrhinum molle A *
Antirrhinum sempervirens L
Antirrhinum sp. A
Apios americana K 7
Apocynum androsaemifolium A
Aquilegia 'Lime Sorbet' A
Aquilegia 'Pink Ruffle' A
Aquilegia akitensis A
Aquilegia all species *
Aquilegia alpina ! A 4
Aquilegia amaliae A
Aquilegia atrata E
Aquilegia aurea A
Aquilegia barnebyi A
Aquilegia bertolonii ! A 3
Aquilegia bertolonii 'Blue Berry' A
Aquilegia Biedermeier Group A
Aquilegia Blue Jay' (Songbird Series) A
Aquilegia borodinii A
Aquilegia brevistyla A 3
Aquilegia buergeriana ! A
Aquilegia caerulea A
Aquilegia canadensis J
Aquilegia canadensis 'Corbett' J 4 *
Aquilegia canadensis 'Little Lanterns' J
Aquilegia canadensis 'Nana' J 4 *
Aquilegia chaplinei A 2 4
Aquilegia chrysantha A 2 4
Aquilegia chrysantha 'Yellow Queen' A 2 4
Aquilegia chrysantha var. chaplinei A 2 4
Aquilegia clematiflora A
Aquilegia columbiana A
Aquilegia desertorum A
Aquilegia discolor D 4
Aquilegia Dwarf Fantasy' A 4
Aquilegia ecalcarata ! J
Aquilegia elegantissima A
Aquilegia flabellata A 4
Aquilegia flabellata 'Alba' A 4
Aquilegia flabellata 'Cameo Pink' (Cameo Series) A 4
Aquilegia flabellata 'Flore Pleno Alba' A 4
Aquilegia flabellata 'Ministar' A 4
Aquilegia flabellata 'Nana Alba' A 4
Aquilegia flabellata 'Nana' A 4
Aquilegia flabellata Cameo Series A 4
Aquilegia flabellata f. alba A 4
Aquilegia flabellata var. kurilensis A 4
Aquilegia flabellata var. nana A 4
Aquilegia flabellata var. pumila A 4
Aquilegia flabellata var. pumila f. alba A 4
Aquilegia flavescens L
Aquilegia formosa A
Aquilegia formosa ssp.. canadensis A
Aquilegia fragrans A
Aquilegia glandulosa A
Aquilegia glandulosa var. jucunda A
Aquilegia grahamii L
Aquilegia Hensol Harebell' A
Aquilegia hybrid A
Aquilegia hybrida A 3
Aquilegia hybrids A
Aquilegia jonesii A 3
Aquilegia jonesii x saximontana ! A 4
Aquilegia karelinii ! J
Aquilegia Kristall' A
Aquilegia kurdistanica L
Aquilegia laramiensis A 4
Aquilegia Leprechaun Gold' A
Aquilegia longissima A
Aquilegia Magpie' A
Aquilegia McKana Group A
Aquilegia micrantha A
Aquilegia micrantha v. grahamii A
Aquilegia microphylla A 4
Aquilegia montana A
Aquilegia Mrs Scott Elliot hybrids A
Aquilegia nigricans A
Aquilegia nigricans subsp. subscaposa A
Aquilegia olympica L
Aquilegia Origami Mix' A
Aquilegia ottonis A
Aquilegia oxysepala L
Aquilegia parviflora A
Aquilegia Perfumed Garden Group A
Aquilegia pyrenaica A
Aquilegia pyrenaica subsp. cazorlensis G 4
Aquilegia pyrenaica subsp. discolor A
Aquilegia Red Hobbit' A
Aquilegia saximontana G 4 *
Aquilegia saximontana cross G 4 *
Aquilegia saximontana x jonesii A
Aquilegia scopulorum G 4 *
Aquilegia shockleyi A 3
Aquilegia sibirica A
Aquilegia sp. A
Aquilegia subscaposa A
Aquilegia thalictroides A
Aquilegia triternata J
Aquilegia ullepitschii A
Aquilegia viridiflora A 3
Aquilegia vulgaris A
Aquilegia vulgaris 'Burnished Rose' A
Aquilegia vulgaris 'Magpie' A
Aquilegia vulgaris 'Nivea' A
Aquilegia vulgaris 'Pink Petticoat' A
Aquilegia vulgaris 'William Guiness' A
Aquilegia vulgaris 'Winky Purple-White' A
Aquilegia vulgaris 'Woodside' (Vervaeneana Group) A
Aquilegia vulgaris double A
Aquilegia vulgaris Grandmother's Garden Group A
Aquilegia vulgaris hybrid A
Aquilegia vulgaris v. stellata 'Blue Barlow' A
Aquilegia vulgaris var. alba A
Aquilegia vulgaris var. flore-pleno A
Aquilegia vulgaris var. flore-pleno 'Tower Light Blue' A
Aquilegia vulgaris var. floro-plena 'Double Pleat' A
Aquilegia vulgaris var. stellata A
Aquilegia vulgaris var. stellata 'Black Barlow' (Barlow Series) A
Aquilegia vulgaris var. stellata 'Blue Barlow' A
Aquilegia vulgaris var. stellata 'Nora Barlow' A
Aquilegia vulgaris var. stellata 'Ruby Port' A
Aquilegia Winky Purple-White' A
Aquilegia x hybrida A
Aquilegia x scopulorum G 4
Aqulilegia sp. A
Arabis all species A
Arabis allionii A
Arabis alpina A *
Arabis alpina ssp. caucasica A *
Arabis alpina subsp. caucasica A *
Arabis androsacea A
Arabis blepharophylla A
Arabis blepharophylla 'Fruhlingszauber' A
Arabis blepharophylla 'Red Sensation' A
Arabis bryoides F
Arabis caerulea A
Arabis caucasica A 3
Arabis caucasica 'Rosea' A 3
Arabis caucasica 'Schneehaube' A 3
Arabis caucasica 'Snowfix' A *
Arabis collina A
Arabis collina subsp. rosea A
Arabis koehleri A
Arabis muralis A
Arabis pieninica A *
Arabis pumila A
Arabis purpurea A
Arabis scopoliana A 3
Arabis sp. A
Arabis stelleri var. japonica A
Arabis Variegata' ? 3
Arabis x arendsii A
Arabis x arendsii 'Rosabella' L
Arabis x sturii A
Aralia cachemirica L
Aralia californica G
Aralia chinensis G
Aralia continentalis G
Aralia cordata ! L
Aralia cordata 'Sun King' ! L
Aralia cordata var. sachalinensis ! L
Aralia edulis ! L
Aralia elata G
Aralia elata 'Variegata' G
Aralia hispida L
Aralia nudicaulis ! H *
Aralia racemosa ! H 4
Aralia sp. H 6 8 *
Arctanthemum arcticum A
Arcterica nana K
Arctostaphylos all species L 3 6 7 *
Arctostaphylos uva-ursi ! G 6 7 *
Arctotis acaulis A
Arctotis adpressa A
Arctotis fastuosa A
Arctotis grandis A
Arctotis rosea A
Arctotis stoechadifolia A
Arctotis venusta A
Ardisia primulifolia ? *
Arenaria all species A
Arenaria balearica A
Arenaria cretica A 3
Arenaria festucoides B
Arenaria grandiflora A
Arenaria kingii A
Arenaria ledebouriana F
Arenaria longifolia A
Arenaria montana A
Arenaria norvegica A *
Arenaria obtusiloba A
Arenaria procera subsp. glabra A
Arenaria pseudacantholimon A *
Arenaria sp. A
Arenaria tetraquetra A
Arenaria tetraquetra subsp. amabilis A
Argemone grandiflora A 2
Argemone hispida L *
Argemone mexicana K
Argemone mexicana var. ochroleuca K
Argemone sp. K
Argemone squarrosa A
Argemone squarrosa subsp. glabrata A
Argentina egedii A
Argyranthemum frutescens A
Argyranthemum pinnatifidum A
Arisaema all species 8 *
Arisaema amurense A 8 *
Arisaema angustatum var. peninsulae A 8 *
Arisaema atrorubens A 8 *
Arisaema bockii B 8 *
Arisaema candidissimum A 8 *
Arisaema ciliatum A 8 *
Arisaema ciliatum 'Sky Wish' A 8 *
Arisaema ciliatum var. liubaense A 8 *
Arisaema consanguineum A 8 *
Arisaema consanguineum 'The Perfect Wave' A 8 *
Arisaema dracontium A 8 *
Arisaema engleri B 8 *
Arisaema fargesii A 8 *
Arisaema flavum A 8 *
Arisaema flavum subsp. abbreviatum B 8 *
Arisaema griffithii A 8 *
Arisaema helleborifolium A 8 *
Arisaema heterophyllum A 8 *
Arisaema himalaicum 8 *
Arisaema jacquemontii A 8 *
Arisaema japonicum A 8 *
Arisaema ovale B 8 *
Arisaema peninsulae A 8 *
Arisaema quinatum 8 *
Arisaema ringens A 8 *
Arisaema robustum A 8 *
Arisaema serratum A 8 *
Arisaema serratum 'Silver Leaf Form' A 8 *
Arisaema serratum var. serratum A 8 *
Arisaema sikokianum A 8 *
Arisaema sikokianum x takedae A 2 8 *
Arisaema sp. D 8 *
Arisaema speciosum F 8 *
Arisaema tortuosum A 8 *
Arisaema triphyllum A 8 *
Arisaema triphyllum 'Mrs French's veined form' A 8 *
Arisaema triphyllum 'Starburst' A 8 *
Arisaema triphyllum subsp. quinatum A 8 *
Arisaema urashima A 8 *
Arisaema utile A 8 *
Arisaema yunnanense A 8 *
Arisarum proboscideum A
Aristea capitata C
Aristlochia firmbriata A 7 8
Aristolochia contorta A
Aristolochia fimbriata A 7
Aristolochia littoralis A
Armeria alliacea L
Armeria alliacea f. leucantha L
Armeria alpina A *
Armeria Bee's hybrids A
Armeria bourgaei A 2
Armeria caespitosa ! A *
Armeria duriaei A 2
Armeria euscadiensis A
Armeria filicaulis A 2
Armeria formosa hybrids A
Armeria hybrida A 7
Armeria Joystick Red' A
Armeria Joystick Series A
Armeria juniperifolia A *
Armeria latifolia A
Armeria latifolia var. macrantha B
Armeria maritima A 2
Armeria maritima 'Laucheana ' A 2
Armeria maritima 'Ministicks White' A 2
Armeria maritima 'Rubrifolia ' A 2
Armeria maritima 'Vindictive' A 2
Armeria maritima subsp. alpina A 2
Armeria maritima subsp. bottendorfensis A 2
Armeria maritima subsp. elongata A 2
Armeria maritima subsp.sibirica A 2
Armeria maritima var. labradorica A 2
Armeria morisii B
Armeria Ornament' A 7
Armeria plantaginea B
Armeria pseudarmeria B
Armeria rhodopea A
Armeria rubrifolia K
Armeria rumelica A
Armeria ruscinonensis A 2
Armeria scabra A 2
Armeria scabra subsp. sibirica A 2
Armeria scabra var. sibirica A 2
Armeria sp. A
Armeria splendens A 2
Armeria trojana A
Armeria Vesuvius' B
Armeria welwitschii A
Arnebia echioides A
Arnebia pulchra C
Arnica alpina A
Arnica angustifolia J
Arnica angustifolia subsp. iljinii J
Arnica chionopappa K
Arnica cordifolia K
Arnica frigida A
Arnica iljinii A
Arnica lonchophylla K
Arnica longifolia A
Arnica montana A
Arnica montana subsp. montana A
Arnica nevadensis A
Arnica sachalinensis ?
Arnica sp. ?
Aronia melanocarpa G 7
Aronia melanocarpa ?Red Viking? C
Aronia melanocarpa 'Autumn Magic' J 7
Aronia x prunifolia G 7
Artemisia chamaemelifolia F
Artemisia cretacea A
Artemisia dracunculus F
Artemisia frigida A 3
Artemisia genipi F
Artemisia lactiflora (Guizhou group) F
Artemisia ludoviciana 'Valerie Finnis' B 3 *
Artemisia molinieri A
Artemisia nutans A
Artemisia pamirica A 2
Artemisia Powis Castle' A 3
Artemisia rutifolia ?
Artemisia stelleri A
Artemisia stelleriana 'Boughton Silver' F
Artemisia stelleriana 'Silver Brocade' F
Artemisia vachanica A
Artemisia vallesiaca A
Artemisia viridis A
Arthropodium candidum L
Arthropodium cirrhatum A
Arum Chameleon' ! D 2 7 *
Arum concinnatum ! D 2 7 *
Arum dioscoridis H *
Arum italicum ! D 2 7 *
Arum italicum ?White Winter' ! D 2 7 *
Arum italicum 'McClement Form' ! D 2 7 *
Arum italicum 'Pictum ' ! D 2 7 *
Arum italicum subsp. italicum 'Marmoratum' ! D 2 7 *
Arum maculatum ! D 2 7 *
Arum palaestinum ! D 2 7 *
Arum sp. ! D 2 7 *
Aruncus aestivus J 3
Aruncus aethusifolius J
Aruncus aethusifolius 'Noble Spirit' H
Aruncus dioicus A
Aruncus dioicus 'Kneiffii ' A
Aruncus dioicus var. aethusifolius J
Aruncus hybrid K
Aruncus laciniatus E
Aruncus Misty Lace' ? *
Aruncus most species *
Aruncus sp. K
Aruncus sylvester J 3
Aruncus vulgaris A
Asarina erubescens A
Asarina Joan Lorraine' A
Asarina procumbens A 3
Asarina purpusii A
Asarina scandens A
Asarina scandens 'Joan Lorraine' A
Asarina sp. A
Asarum canadense ! E *
Asarum europaeum ! E 8 *
Asclepias all species *
Asclepias curassavica A
Asclepias exaltata J
Asclepias incarnata A 1 3 *
Asclepias incarnata 'Alba' J 1 3 *
Asclepias incarnata 'Cinderella ' J 1 3 *
Asclepias incarnata 'Ice Ballet' J 1 3 *
Asclepias incarnata 'Soulmate' J 1 3 *
Asclepias purpurascens G
Asclepias purpurea J
Asclepias sp. A *
Asclepias syriaca A
Asclepias tuberosa A 1 *
Asclepias tuberosa 'Hello Yellow' A 1 *
Asclepias tuberosa Gay Butterflies Group A 1 *
Asclepias verticillata L
Asimina triloba ! J
Asparagus officinalis A 7
Asparagus officinalis A 7
Asparagus officinalis var. psuedoscaber A 7
Asperula abchasica L
Asperula azurea A
Asperula capitata A 3
Asperula glauca ?
Asperula glomerata subsp. glomerata A 3
Asperula gussonei A
Asperula nitida L
Asperula nitida subsp. hirtella L
Asperula orientalis A
Asperula tinctoria J
Asphodeline damascena A
Asphodeline liburnica A 2
Asphodeline lutea A
Asphodeline sp. K
Asphodeline taurica A
Asphodelus albus A
Asphodelus cerasiferus B
Asphodelus damascenus A
Asphodelus fistulosus K
Asphodelus luteus A
Aspleniaceae whole genus A *
Asplenium trichomanes A *
Aster acuminatus B
Aster ageratoides A 3
Aster ageratoides 'Star Shine' A
Aster ageratoides 'Tiny Theo' A 3
Aster all species *
Aster alpigenus A
Aster alpinus A
Aster alpinus 'Albus' A
Aster alpinus 'Dark Beauty' J
Aster alpinus 'Goliath' J
Aster alpinus 'Happy End' J
Aster alpinus 'Maerchenland' A
Aster alpinus 'Pinkie' J
Aster alpinus 'White Beauty'' J
Aster alpinus hybrid J
Aster alpinus subsp. dolmiticus J
Aster altaicus B 3
Aster amellus 'Rudolphe Goethe' ! L
Aster asteroides ssp. costei A 3
Aster chinensis 'Hulk' B
Aster coloradoensis B
Aster conspectus B 2
Aster cordifolius B
Aster diplostephioides J
Aster divaricatus B
Aster dumosus 'Gold Flake' B
Aster ericoides ! H
Aster farreri B
Aster flaccidus B
Aster gracilentus A
Aster heterochaeta B
Aster himalaicus B
Aster kantoensis B 3
Aster laevis B
Aster lateriflorus B
Aster likiangensis J
Aster linariifolius B
Aster linosyris ! L
Aster maritimus A 3
Aster mongolicus B
Aster nemoralis B
Aster nepaulensis B
Aster novae-angliae B
Aster oblongifolius 'October Skies ' B
Aster ptarmicoides 'Summer Snow' B
Aster Purple Dome' B
Aster sibiricus B
Aster sikkimmensis B
Aster Snow Flurry' (Novi belgii) B
Aster souliei B
Aster sp. J
Aster stracheyi B
Aster tataricus J
Aster tongolensis B
Aster tongolensis 'Wartburg Star' B
Aster umbellatus B
Aster x frikartii B
Aster x frikartii 'Wunder von Stafa ' B
Aster yunnanensis B
Asteromoea mongolica A
Astilbe biternata A 3
Astilbe chinensis A 3 *
Astilbe chinensis 'Vision in Red' A 3 *
Astilbe chinensis var. davidii A 3 *
Astilbe chinensis var. pumila A 3 *
Astilbe Fanal' (x arendsii) A 3
Astilbe hybrid A *
Astilbe rubra A
Astilbe rubra 'Purple Candles' A
Astilbe rubra 'Valerie' A
Astilbe simplicifolia A
Astilbe sp. A 3 *
Astilbe thunbergii var. formosa A
Astilbe Willie Buchanan' A
Astilboides all species *
Astilboides tabularis A 3 *
Astracantha gummifera A 1 6 7
Astragalus alexandrii K 6
Astragalus all species *
Astragalus alpinus A 1 6 *
Astragalus alyssoides A 1 6 7 *
Astragalus canadensis A 1 6 7 *
Astragalus centralpinus A 6 7
Astragalus cicer K 6
Astragalus crassicarpus A 6 7
Astragalus danicus L 1 6 7 *
Astragalus frigidus A 1 6 7 *
Astragalus glycyphyllos A 1 6 7 *
Astragalus gummifera A 1 6 7
Astragalus lasiopetalus A 1 6 7 *
Astragalus membranaceus J 6 7 *
Astragalus mongholicus A 6 7
Astragalus neglectus A 6 7
Astragalus parryi *
Astragalus pelecinus A 6 7
Astragalus penduliflorus A 6 7
Astragalus propinquus J 6 7
Astragalus purshii A 1 6 7 *
Astragalus roemeri *
Astragalus sericeus A 1 6 7 *
Astragalus sinicus J 7
Astragalus sp. A 1 6 7 *
Astragalus suzgatus A 1 6 7
Astragalus whitneyi A 1 6 7 *
Astrantia carniolica var. rubra ! B 2
Astrantia major 'Alba' ! H 2
Astrantia major 'Lars ' ! H 2
Astrantia major 'Roma' ! H 2
Astrantia major 'Rubra' ! H 2
Astrantia major 'Ruby Cloud' ! H 2
Astrantia major 'Ruby Wedding' ! H 2
Astrantia major 'Star of Billion' ! H 2
Astrantia major 'Sunningdale Variegated' ! H 2
Astrantia major 'Variegata' ! H 2
Astrantia major 'White Star' ! H 2
Astrantia major subsp. carnolica ! H 2
Astrantia major subsp. involucrata 'Shaggy' ! H 2
Astrantia major var. rosea ! H 2
Astrantia maxima ! H 2
Astrantia maxima 'Alba' ! H 2
Astrantia sp. ! H 2
Asyneuma limonifolium L
Athamanta Denver Lace' ?
Athamanta turbith A
Athamanta turbith subsp. haynaldii A
Athyrium filix-femina 'Victoriae' A *
Athyrium niponicum A *
Atragene ochotensis D 9
Atraphaxis sp. L
Atriplex 'Red Flash' A
Atriplex hortensis A
Atriplex hortensis var. rubra A
Atropa belladonna L 4 7
Aubrieta Blue Cascade' (Cascade Series) A
Aubrieta canescens A
Aubrieta deltoidea A
Aubrieta deltoidea 'Nana Variegata' A
Aubrieta gracilis K
Aubrieta intermedia A 3
Aubrieta kotschyi A 3
Aubrieta macedonica A
Aubrieta most species A
Aubrieta parviflora A 3
Aubrieta pinardii A
Aubrieta scardica A
Aubrieta sp. A
Aureolaria virginica ! G
Aurinia corymbosa A
Aurinia saxatilis A
Aurinia saxatilis 'Carpet of Gold' A
Aurinia saxatilis 'Citrina ' A
Aurinia saxatilis 'Compacta' A
Aurinia saxatils 'Citrinum' A
Avenella flexuosa A
Azalea Boudoir' A *
Azalea Ghent hybrid A *
Azalea kiusianum 'Komo Kulshan' A *
Azalea Mollis hybrid A *
Azalea Phyllis Moore' A *
Azalea Sandra Hinton' A *
Azalea sp. A *
Baccharis magellanica K
Baileya multiradiata A
Ballota acetabulosa A
Ballota pseudodictamnus A
Balsamorhiza sagittata J
Banksia ericifolia J *
Baptisia 'Solar Flare' A 7 *
Baptisia 'Vanilla Cream' A 7 *
Baptisia 'Vanilla Cream' A 7 *
Baptisia alba A 7 *
Baptisia australis A 7 *
Baptisia australis 'Blueberry Sundae' A 7 *
Baptisia Blueberry Sundae' A 7 *
Baptisia Dutch Chocolate' A 7 *
Baptisia hybrid A 7 *
Baptisia lactea A 7 *
Baptisia Lemon Meringue' A 7 *
Baptisia leucantha G 7 *
Baptisia leucophaea G 7 *
Baptisia perfoliata J *
Baptisia Prairieblues Series A 7 *
Baptisia sp. A 7 *
Baptisia tinctoria A 6 7 *
Baptisia Twilite' A 7 *
Baptisia variicolor 'Twilite'(Pairieblues Series) A 7 *
Baptisia x variicolor 'Twilite' A 7 *
Barbarea rupicola A
Barnardia japonica A
Barnardia numidica A
Bartsia alpina E
Begonia boliviensis A 3
Begonia grandis A
Begonia grandis 'Alba' A
Begonia grandis ssp. sinensis A
Begonia grandis subsp. evansiana A
Begonia sp. A
Begonia sutherlandii A 3
Begonia x albopicta A