Aesculus californica Aesculus flava
Aesculus flava x pavia Aesculus glabra
Aesculus glabra 'Monticola' Aesculus glabra 'Sargentii'
Aesculus glabra var. arguta Aesculus glabra var. pallida
Aesculus parviflora Aesculus parviflora f. serotina
Aesculus pavia Aesculus sylvatica
Agarista populifolia Agastache aurantiaca 'Apricot Sprite'
Agastache foeniculum 'Golden Jubilee' Agastache foeniculum 'Honeybee Blue'
Agave 'Edward Hummel' Agave americana
Agave americana 'Marginata' Agave americana 'Medio'
Agave americana 'Variegata' Agave americana var. expansa
Agave attenuata Agave attenuata 'Nova'
Agave auellanidens Agave aurea
Agave bovicornuta Agave chrysantha
Agave colorata Agave decipiens
Agave deserti Agave deserti var. deserti
Agave deserti var. pringlei Agave difformis
Agave franzosinii Agave funkiana
Agave guiengola Agave lechuguilla
Agave macroacantha Agave maximiliana var. katherinae
Agave morani Agave multifilifera
Agave murpheyi Agave neomexicana
Agave ocahui Agave palmeri
Agave parryi Agave parryi var. huachucensis
Agave parryi var. conesii Agave parryi var. truncata
Agave parviflora Agave pelona
Agave potatorum Agave salmiana
Agave schottii Agave schottii var. treleasei
Agave sebastiana Agave shawii
Agave shawii ssp. goldmaniana Agave shawii ssp. shawii
Agave sobria Agave ssp.
Agave stricta Agave thrysoglossa
Agave titanota Agave utahensis ssp. kaibabensis
Agave utahensis x mckelveyana Agave vanbalenii
Agave victoriae-reginae Agave vilmoriniana
Agave weberi Agave zebra
Ageratina altissima 'Chocolate' Ageratum houstonianum
Ageratum houstonianum 'Bavaria' Ageratum houstonianum 'Blue Horizon'
Ageratum houstonianum 'Hawaii Blue' Ageratum houstonianum 'Hawaii White'
Ageratum houstonianum 'True Blue' Alisma plantago-aquatica
Allium acuminatum Allium ampeloprasum
Allium cernuum Allium schoenoprasum
Allium schoenoprasum 'Pink Feathers' Allium schoenoprasum 'Schnittlauch'
Allium stellatum Allium validum
Alnus maritima Alnus rhombifolia
Alnus rubra Aloe affinis
Aloe claviflora Aloe reitzii
Aloe vera Alternanthera ficoidea 'Brilliant'
Amaranthus x 'Intensa Pink' Amaranthus cruentus
Amaranthus cruentus 'Golden Giant' Amaranthus hypochondriacus 'Pygmy Torch'