'Honest Pleasure' Daylily 'Honesty' Money Plant
Honesty (spp.) Honesty 'Honesty'
Honey Plant (spp.) Honey Plant Variegated
'Honeybells' Hosta Honeydew Sage
'Honeysong Purple' Stokes' Aster Honeysuckle, Mexican
'Hong Chow Bowl' Sacred Lotus Hong Kong Lily
'Honky Tonk Blues' Tall Bearded German Iris Hoodia
Hoodia: gordonii Hoop & Petticoat Daffodil
Hop Goodenia Hop Marjoram (spp.)
Hop Marjoram 'Amargcus Dictamnus' Hop, Common Golden
Hop, Common 'Summer Shandy™' Hop, Common 'Variegatus'
Hop, European Golden Hop, European 'Summer Shandy™'
Hop, European 'Variegatus' Hop, False
'Hope' Florist's Chrysanthemum Hops, Ornamental Golden
Hops, Ornamental 'Summer Shandy™' Hops, Ornamental 'Variegatus'
Horn of Plenty 'Flore Pleno' Horned Pansy (spp.)
Horned Pansy 'Alba Minor' Horned Pansy 'Black Magic'
Horned Pansy 'Jupiter' Horned Pansy 'Penny Primrose'
Horned Pansy 'Splendens' Horned Tulip
Horned Violet (spp.) Horned Violet 'Alba Minor'
Horned Violet 'Black Magic' Horned Violet 'Jupiter'
Horned Violet 'Penny Primrose' Horned Violet 'Splendens'
Horse Nettle Horsefoot
Horse-heal Horsehoof
Horsemint (spp.) Horsemint 'Jacob Cline'
Horsemint 'Marshal's Delight' Horsemint 'Panorama'
Horsemint: punctata Horses Tail
Horsetail Horsetail Restio
Horsetail, Common Horsetail, Field
Horsetail, Mini Horsetail, Rough
Horsetail: hyemale 'Hortensis' Japanese Aster