Ageratina 'Chocolate' Ageratum, Hardy
'Agincourt' Venus' Slipper 'Aglaia' Shasta Daisy
Aglaonema Aglaonema: pictum
Agrimony, Hemp Agrimony: repens
Air Pine Air Pine 'Bert'
Airplane Plant Aizoon Saxifrage
Aizoon Stonecrop (spp.) Aizoon Stonecrop 'Aurantiacum'
Alabaster Plant 'Alan Bloom' Tube Clematis
Alaska Fringecup (spp.) Alaska Fringecup 'Rubra'
'Alaska' Shasta Daisy 'Alba Minor' Horned Violet
Albanian Spurge (spp.) Albanian Spurge 'Portuguese Velvet'
Albardine 'Alba-variegata' Sweet Iris
'Albiflorus' Gas Plant 'Albo Strata' Hakone Grass
'Albovariegata' Little Club Moss 'Albu Marginatai' Bromeliad
Albuca 'Alcazar' Common Torch Lily: Kniphofia
Alder, Yellow (spp.) 'Alert' New England Aster
'Alexander' Clematis 'Alexander' Garden Loosestrife
Algerian Iris 'Alice' Chinese Anemone
'Alida's Pesto' Coral Bells: sanguinea 'Alisha' Florist's Chrysanthemum
'All Gold' Hakone Grass 'All Gold' Lemon Balm
Allamanda 'Janelle' Allamanda 'Leah'
'Allan P. McConnell' Hosta Alleghany Pachysandra
Alleghany, Spurge Allegheny Monkey Flower
'Allegiance' Daylily 'Allegro' Oriental Poppy
'Allen Chickering' Sage: Salvia Alluaudia
Alluaudia: procera 'Alma Potschke' New England Aster
Almond Geranium Almond Spurge 'Purpurea'
Alocasia, Giant (spp.) Aloe
Aloe Yucca (spp.) Aloe Yucca 'Marginata'
Aloe Yucca Variegated Aloe, American (spp.)
Aloe, American 'Medio' Aloe, American Variegated
Aloe, American Variegated Aloe, American 'White Striped'
Aloe, Arabian Aloe, Barbados
Aloe, Blue Aloe, Bullock's Bottlebrush
Aloe, Candelabra (spp.) Aloe, Candelabra Variegated
Aloe, Cape Aloe, Cat's Tail
Aloe, Climbing Aloe, Coast
Aloe, Coral Aloe, Fan
Aloe, Flat Flowered Aloe, Golden Tooth
Aloe, Gold-Spined Aloe, Ground Spotted
Aloe, Hardy Aloe, Jackal's Tail
Aloe, Kokerboom Aloe, Kralalwyn
Aloe, Medicinal Aloe, Mountain
Aloe, Namaqua Aloe, Nubian (spp.)
Aloe, Nubian Variegated Aloe, Red Spined Blue
Aloe, Reitz's Aloe, Short Leaved (spp.)
Aloe, Short Leaved Variegated Aloe, Snake
Aloe, Soap Aloe, Spiny
Aloe, Spiral Aloe, Stone
Aloe, Sunset Aloe, Tiger Tooth
Aloe, Warty Aloe, Windhoek
Aloe, Zebra Leaf Aloe: bainesii
Aloe: buhri Aloe: camperi
Aloe: chabaudii Aloe: commutata
Aloe: deltoideodonta Aloe: esculenta
Aloe: kambensis Aloe: longibracteata
Aloe: marlothii, Mountain Aloe: mubendiensis
Aloe: mutabilis Aloe: rupestris
Aloe: scabinofolia Aloe: sinkatana
Aloe: striata, Coral Aloe: suprafoliata
Aloe: trichosantha Aloe: vulgaris