'Hong Chow Bowl' Sacred Lotus Hong Kong Lily
Hong Kong Orchid Tree 'Honky Tonk Blues' Tall Bearded German Iris
Hoodia Hoodia: gordonii
Hoop & Petticoat Daffodil 'Hoopsii' Colorado Spruce
Hoover's Manzanita Hop Goodenia
Hop Hornbeam Hop Hornbeam, American
Hop Hornbeam, Eastern Hop Marjoram (spp.)
Hop Marjoram 'Amargcus Dictamnus' Hop Tree, Common (spp.)
Hop Tree, Common Golden Hop, Common Golden
Hop, Common 'Summer Shandy™' Hop, Common 'Variegatus'
Hop, European Golden Hop, European 'Summer Shandy™'
Hop, European 'Variegatus' Hop, False
Hopbush (spp.) Hop-bush, Trailing
'Hope' Florist's Chrysanthemum Hops, Ornamental Golden
Hops, Ornamental 'Summer Shandy™' Hops, Ornamental 'Variegatus'
Hopseed Bush (spp.) Hoptree (spp.)
Hoptree Golden 'Horae Wilson' Norway Spruce
'Horizantalis' Prickly Tea Tree 'Horizon Coral Halo' Garden Petunia
'Horizon Yellow' Garden Petunia Horizontal Juniper (spp.)
Horizontal Juniper 'Alpina' Horizontal Juniper 'Bar Harbor'
Horizontal Juniper Blue Horizontal Juniper 'Blue Acres'
Horizontal Juniper 'Blue Chip' Horizontal Juniper 'Blue Mat'
Horizontal Juniper 'Blue Rug' Horizontal Juniper 'Douglasii'
Horizontal Juniper 'Dunvegan Blue' Horizontal Juniper 'Emerald Spreader'
Horizontal Juniper 'Hegedus (Good Vibrations® Gold)' Horizontal Juniper 'Hughes'
Horizontal Juniper 'Jade River' Horizontal Juniper 'Livida'
Horizontal Juniper 'Plumosa' Horizontal Juniper 'Plumosa Compacta'
Horizontal Juniper 'Plumosa Compacta Wilms' Horizontal Juniper 'Prince of Wales'
Horizontal Juniper 'Turqouise Spreader' Horizontal Juniper Variegated
'Horizontalis' Colorado Red Cedar 'Horizontalis' Natal Plum
'Horizontalis' Scotch Elm Horn of Plenty (spp.)
Horn of Plenty 'Flore Pleno' Hornbeam
Hornbeam Maple Hornbeam, American
Hornbeam, Common (spp.) Hornbeam, Common 'Fastigiata'
Hornbeam, Common Weeping Hornbeam, European (spp.)
Hornbeam, European 'Fastigiata' Hornbeam, European Weeping
Hornbeam, Japanese Hornbeam: caroliniana, American
Hornbeam: cordata Hornbeam: laxiflora
Horned Holly (spp.) Horned Holly 'Burfordii'
Horned Holly 'Burfordii Nana' Horned Holly 'Carissa'
Horned Holly 'Ospring' Horned Holly 'Rotunda'
Horned Maple Horned Pansy (spp.)
Horned Pansy 'Alba Minor' Horned Pansy 'Black Magic'
Horned Pansy 'Jupiter' Horned Pansy 'Penny Primrose'
Horned Pansy 'Skippy XL Red-Gold' Horned Pansy 'Sorbet Orange Duet'
Horned Pansy 'Splendens' Horned Poppy
Horned Tulip Horned Violet (spp.)
Horned Violet 'Alba Minor' Horned Violet 'Black Magic'
Horned Violet 'Jupiter' Horned Violet 'Penny Primrose'
Horned Violet 'Skippy XL Red-Gold' Horned Violet 'Sorbet Orange Duet'
Horned Violet 'Splendens' 'Hornibrookii' Common Juniper
'Hornibrookii' Norway Spruce