'Hall's' Japanese Honeysuckle 'Hall's Pink' Daylily
Hally Jolivette Cherry 'Hally Jolivette' Cherry
'Hamabo' Rose of Sharon 'Hamburg' Bigleaf Hydrangea
'Hamelin' Chinese Fountain Grass Hammock Fern
'Hammonasset' Sheep Laurel 'Hanabi' Bigleaf Hydrangea
'Hanafubuki' Picotee Morning Glory 'Hanajina' Blue Clematis
'Hanakisoi' Japanese Tree Peony 'Hanami nishiki' Japanese Maple
Hand Fern Handkerchief Tree
'Handsworth New Silver' English Holly Hanging Geranium (spp.)
Hanging Geranium 'Colorcade Lavender' Hanging Geranium 'Sunset'
'Hankie' Florist's Chrysanthemum Hankow Willow (spp.)
Hankow Willow 'Tortuosa' Hankow Willow Weeping
'Hannah Ray' Red Bottlebrush Hansen's Bush Cherry
Haplopappus 'Happy Dreams' Garden Petunia
'Happy Face® Pink Paradise' Shrubby Cinquefoil 'Happy Face® White' Shrubby Cinquefoil
'Happy Face® Yellow' Shrubby Cinquefoil 'Happy Festival' Baby's Breath
'Happy' Japanese Maple 'Happy Returns' Daylily
'Happy Wanderer' Lilac Vine 'Harbor Belle™' Heavenly Bamboo
'Harbor Dwarf' Heavenly Bamboo 'Harcot' Apricot
Hard Fern Hard Maple (spp.)
Hard Maple 'Ann Rutledge' Hard Maple 'Arrowhead'
Hard Maple 'Celebration' Hard Maple 'Coleman'
Hard Maple 'Commemoration' Hard Maple 'Eagle Claw'
Hard Maple 'Endowment' Hard Maple 'Fairview'
Hard Maple 'Globosum' Hard Maple 'Goldspire'
Hard Maple 'Legacy' Hard Maple 'Newton Sentry'
Hard Maple 'Seneca Chief' Hard Maple 'Skybound'
Hard Maple 'Sweet Shadow' Hard Maple 'Temple's Upright'
Hardback Hardy Ageratum
Hardy Aloe Hardy Amaryllis
Hardy Bamboo Palm Hardy Begonia
Hardy Begonia: grandis Hardy Biokova Geranium (spp.)
Hardy Biokova Geranium 'Biokovo' Hardy Biokova Geranium 'Biokovo Karmina'
Hardy Catalpa (spp.) Hardy Catalpa Golden
Hardy Catalpa 'Pulveralenta' Hardy Century Plant
Hardy Chrysanthemum 'Cambodian Queen' Hardy Fuchsia (spp.)
Hardy Fuchsia 'Pumila' Hardy Gloxinia 'Evita'
Hardy Gloxinia (spp.) Hardy Gloxinia 'Snowtop'
Hardy Grape Leaf Anemone 'Robustissima' Hardy Hibiscus (spp.)
Hardy Hibiscus 'Aphrodite' Hardy Hibiscus 'Armande'
Hardy Hibiscus 'Azurri Blue Satin®' Hardy Hibiscus 'Blue Chiffon™'
Hardy Hibiscus 'Blushing Bride' Hardy Hibiscus 'Brendon Springs'
Hardy Hibiscus 'Buc de Brabant' Hardy Hibiscus 'China Chiffon™'
Hardy Hibiscus 'Cicola' Hardy Hibiscus 'Diana'
Hardy Hibiscus 'Dorothy Crane' Hardy Hibiscus 'Floru(Violet Satin®)'
Hardy Hibiscus 'Freedom' Hardy Hibiscus 'Hamabo'
Hardy Hibiscus 'Helene' Hardy Hibiscus 'Jeanne d'Arc'
Hardy Hibiscus 'Lavender Chiffon™' Hardy Hibiscus 'Lenny'
Hardy Hibiscus 'Lil' Kim™' Hardy Hibiscus 'Longhin'
Hardy Hibiscus 'Maike' Hardy Hibiscus 'Marina(Blue Satin®)'
Hardy Hibiscus 'Meehannii' Hardy Hibiscus 'Melrose'
Hardy Hibiscus 'Minerva' Hardy Hibiscus 'Minrosa (Rose Satin®)'
Hardy Hibiscus 'Monstrosus' Hardy Hibiscus 'Oiseau Bleu'
Hardy Hibiscus 'Paeonyflora' Hardy Hibiscus 'Pink Chiffon™'
Hardy Hibiscus 'Pink Giant' Hardy Hibiscus 'Pink Petticoat'
Hardy Hibiscus 'Puniceus Plenus' Hardy Hibiscus 'Purpureus Variegatus'
Hardy Hibiscus 'Ranululiflorus Plenus' Hardy Hibiscus 'Red Heart'
Hardy Hibiscus 'Roseus Plenus' Hardy Hibiscus 'Rubis'
Hardy Hibiscus 'Russian Violet' Hardy Hibiscus 'Snow Drift'
Hardy Hibiscus 'Sugar Tip®' Hardy Hibiscus 'Totus Albus'
Hardy Hibiscus 'Violet Claire' Hardy Hibiscus 'White'
Hardy Hibiscus 'White Chiffon™' Hardy Hibiscus 'Williiam R. Smith'
Hardy Hibiscus 'Woodbridge' Hardy Ice Plant 'Starburst'
Hardy Orange Gloxinia Hardy Orange (spp.)
Hardy Orange 'Flying Dragon' Hardy Orchid
Hardy Pampas Grass Hardy Rubber Tree
Hardy Zinnia (spp.) Hardy Zinnia 'Ballerina'
Hardy Zinnia 'Summer Sun'