Gum: cloeziana Gum: cypellocarpa
Gum: foecunda Gum: formanii
Gum: globulus maidenii, Blue Gum: globulus maidenii, Tasmanian Blue
Gum: gomphocephala Gum: hallii
Gum: lehmannii Gum: leucoxylon megalocarpa, Yellow
Gum: maculata, Spotted Gum: microtheca
Gum: rhodantha Gum: robusta
Gum: rudis, Flooded Gum: spathulata
Gum: torelliana 'Gumball (Lollipop)' Sweetgum
Gumbo-limbo 'Gunji' Azalea
'Gyokruya' Japanese Cedar 'H.E. Beale' Scotch Heather
Hackberry Hackberry, African
Hackberry, Canyon Hackberry, Chinese (spp.)
Hackberry, Chinese 'Green Cascade' Hackberry, Common (spp.)
Hackberry, Common 'Prairie Pride' Hackberry, Desert
Hackberry, European Hackberry, Mediterranean
Hackberry, Netleaf Hackberry, Sugar (spp.)
Hackberry, Sugar 'All Seasons' Hackberry, Weeping Japanese (spp.)
Hackberry, Weeping Japanese 'Green Cascade' Hackberry, Western
Hackmatack 'Hadsbury' Bigleaf Hydrangea
Hagbrier 'Haggerston Gray' Leyland Cypress
Hair Palm Hairpin Banksia (spp.)
Hairpin Banksia 'Dwarf Hairpin' Hairpin Banksia: spinulosa cunninghamii
Hairy Boronia 'Rose Blossom' Hairy Ceanothus
Hairy Hop tree (spp.) Hairy Hop tree Golden
Hairy Sophora Hairy Stemmed Wattle
'Hakuro Nishiki' Willow 'Haleakala' Copperleaf
'Haley's Comet' Star Anise 'Halka' Japanese Zelkova
'Halka' Thornless Honey Locust 'Hall's' Japanese Honeysuckle
Hally Jolivette Cherry 'Hally Jolivette' Cherry
'Hamabo' Rose of Sharon 'Hamburg' Bigleaf Hydrangea
'Hammonasset' Sheep Laurel 'Hanabi' Bigleaf Hydrangea
'Hanami nishiki' Japanese Maple Handkerchief Tree
'Handsworth New Silver' English Holly Hankow Willow (spp.)
Hankow Willow 'Tortuosa' Hankow Willow Weeping
'Hannah Ray' Red Bottlebrush Hansen's Bush Cherry
'Happy Face® Pink Paradise' Shrubby Cinquefoil 'Happy Face® White' Shrubby Cinquefoil
'Happy Face® Yellow' Shrubby Cinquefoil 'Happy' Japanese Maple
'Harbor Belle™' Heavenly Bamboo 'Harbor Dwarf' Heavenly Bamboo
'Harcot' Apricot 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 Bamboo Palm
Hardy Catalpa (spp.) Hardy Catalpa Golden
Hardy Catalpa 'Pulveralenta' Hardy Fuchsia (spp.)
Hardy Fuchsia 'Pumila' 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 Orange (spp.)
Hardy Orange 'Flying Dragon' Hardy Rubber Tree