Aldrago Aleppo Pine
'Alert' New England Aster 'Alexander' Clematis
'Alexander' Garden Loosestrife Alexander Palm
Alexandra Palm Alexandrian Laurel
'Alexandrina' Saucer Magnolia: soulangianahybrid 'Alfredo' American Cranberrybush Viburnum
Algerian Iris Algerian Ivy (spp.)
Algerian Ivy Variegated Algerian Oak
'Alice' Chinese Anemone 'Alice' Oakleaf Hydrangea
'Alida's Pesto' Coral Bells: sanguinea 'Alisha' Florist's Chrysanthemum
'All Gold' Hakone Grass 'All Gold' Lemon Balm
'All Seasons' Sugar Hackberry 'All Summer Beauty' Bigleaf Hydrangea
Allamanda 'Janelle' Allamanda 'Leah'
Allamanda 'Rita Marie Green' Allamanda, Bolivian
Allamanda, Bush Allamanda, Common (spp.)
Allamanda, Common 'Cherries Jubilee' Allamanda, Common 'Hendersonii'
Allamanda, Pink Allamanda, Purple
Allamanda, Yellow (spp.) Allamanda, Yellow 'Cherries Jubilee'
Allamanda, Yellow 'Hendersonii' 'Allan P. McConnell' Hosta
'Allee™' Chinese Elm Alleghany Pachysandra
'Alleghany' WillowWood Viburnum Alleghany, Spurge
Allegheny Chinkapin Allegheny Monkey Flower
Allegheny Serviceberry (spp.) Allegheny Serviceberry 'Cumulus'
Allegheny Serviceberry 'Lancifolia' 'Allegiance' Daylily
'Allegro' Oriental Poppy 'Allen Chickering' Sage: Salvia
'Allen Seay' Japanese Holly Alligator Apple
Alligator Juniper 'Davis Mt. Weeping' Alligator Juniper 'Mcfetter'
'Allison' Oakleaf Hydrangea Allspice
'Allspice' Banana Shrub Allspice, Californian
Allspice, Carolina (spp.) Allspice, Carolina 'Athens'
Allspice: dioica Alluaudia
Alluaudia: procera 'Alma Potschke' New England Aster
'Almira' Norway Maple Almond Geranium
Almond Spurge 'Purpurea' Almond, Desert
Almond, Dwarf Flowering (spp.) Almond, Dwarf Flowering 'Rosa Plea'
Almond, Dwarf Flowering 'Rosea Plena' Almond, Flowering 'Multiplex'
Almond, India Almond, Tropical
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