A-B-C-D-E-F-G-H-I-J-K-L-M-N-O-P-Q-R-S-T-U-V-W-X-Y-Z
| Hakonechloa macra | Heuchera 'Mocha®' |
| Hakonechloa macra 'Aureola' | Heuchera 'Obsidian®' |
| Helenium autumnale 'Pumilum Magnificum' | Heuchera 'Petite Marbled Burgundy' |
| Helenium 'Biedemeier' | Heuchera 'Petite Pink Bouquet' |
| Helenium bigelovii 'The Bishop' | Heuchera 'Pewter Moon' |
| Helenium hoopesii | Heuchera 'Pewter Veil' |
| Helenium 'Kanaria' | Heuchera 'Pluie de Feu' |
| Helenium 'Moerheim Beauty' | Heuchera 'Plum Pudding' |
| Helenium 'Rotgold' | Heuchera 'Rachel' |
| Helenium 'Waltraut' | Heuchera 'Red Spangles' |
| Helenium 'Wyndley' | Heuchera sanguinea |
| Helenium 'Zimberstern' | Heuchera sanguinea 'Bressingham Hybrids' |
| Helianthemum 'Amabile Plenum' | Heuchera sanguinea 'Leuchtkäfer' |
| Helianthemum 'Ben Hope' | Heuchera sanguinea 'Snow Storm' |
| Helianthemum 'Bronzeteppich' | Heuchera 'Schneewittchen' |
| Helianthemum 'Cerise Queen' | Heuchera 'Stormy Seas' |
| Helianthemum 'Elfenbeinglanz' | Heuchera 'Strawberry Swirl' |
| Helianthemum 'Golden Queen' | Heucherella alba 'Bridget Bloom' |
| Helianthemum 'Henfield Brilliant' | Heucherella tiarelloides |
| Helianthemum 'Lawrenson’s Pink' | Hibiscus coccineus |
| Helianthemum 'Orange Double' | Hibiscus 'Fantasia®' |
| Helianthemum 'Raspberry Ripple' | Hibiscus 'Fireball®' |
| Helianthemum 'Sterntaler' | Hibiscus 'Kopper King®' |
| Helianthemum 'Sulphureum Plenum' | Hibiscus moscheutos |
| Helianthemum 'The Bride' | Hibiscus moscheutos 'Galaxy' |
| Helianthemum 'Wisley Pink' | Hibiscus 'Old Yella®' |
| Helianthemum 'Wisley Primrose' | Hibiscus 'Plum Crazy®' |
| Helianthus atrorubens | Hieracium aurantiacum |
| Helianthus decapetalus 'Capenoch Star' | Hieracium pilosella |
| Helianthus 'Lemon Queen' | Hieracium villosum |
| Helianthus salicifolius | Hippuris vulgaris |
| Helichrysum 'Schwefellicht' | Holcus mollis 'Albovariegatus' |
| Helictotrichon sempervirens | Hosta 'August Moon' |
| Heliopsis helianthoides 'Goldgrünherz' | Hosta 'Aureomarginata' |
| Heliopsis helianthoides 'Spitzentänzerin' | Hosta 'Big Daddy' |
| Heliopsis helianthoides var. scabra | Hosta 'Birchwood Parkys Gold' |
| Helleborus argutifolius | Hosta 'Blue Angel' |
| Helleborus 'Atrorubens' | Hosta 'Blue Cadet' |
| Helleborus 'Double Queen' | Hosta 'Christmas Tree' |
| Helleborus foetidus | Hosta clausa var. normalis |
| Helleborus foetidus 'Wester Flisk' | Hosta 'Elegans' |
| Helleborus niger | Hosta 'Fire and Ice®' |
| Helleborus niger 'Praecox' | Hosta 'Fortunei Albopicta' |
| Helleborus orientalis | Hosta 'Fortunei Hyacinthina' |
| Helleborus orientalis 'Red Hybrids' | Hosta 'Francee' |
| Helleborus orientalis 'Spotted Hybrids' | Hosta 'Frances Williams' |
| Helleborus sternii | Hosta 'Gold Standard' |
| Hemerocallis 'American Revolution' | Hosta 'Golden Tiara' |
| Hemerocallis 'Autumn Red' | Hosta 'Great Expectations' |
| Hemerocallis 'Black Eyed Susan' | Hosta 'Green Gold' |
| Hemerocallis 'Bonanza' | Hosta 'Ground Master' |
| Hemerocallis 'Catherine Woodbury' | Hosta 'Halcyon' |
| Hemerocallis citrina | Hosta 'Honeybells' |
| Hemerocallis 'Cool It' | Hosta 'June®' |
| Hemerocallis 'Corky' | Hosta 'Krossa Regal' |
| Hemerocallis 'Crimson Pirate' | Hosta lancifolia |
| Hemerocallis 'Eleonore' | Hosta 'North Hills' |
| Hemerocallis 'Flamboyant Show' | Hosta 'Patriot' |
| Hemerocallis 'Frans Hals' | Hosta plantaginea var. grandiflora |
| Hemerocallis 'Golden Chimes' | Hosta 'Royal Standard' |
| Hemerocallis 'Green Flutter' | Hosta sieboldiana |
| Hemerocallis 'Happy Returns' | Hosta 'Snowflakes' |
| Hemerocallis 'Hyperion' | Hosta 'Striptease' |
| Hemerocallis 'Icecap' | Hosta 'Sum and Substance' |
| Hemerocallis lilioasphodelus | Hosta 'Undulata Albomarginata' |
| Hemerocallis 'Little Bugger' | Hosta 'Undulata Mediovariegata' |
| Hemerocallis 'Luxury Lace' | Hosta 'Undulata Univittata' |
| Hemerocallis 'Mary Todd' | Hosta 'Whirlwind' |
| Hemerocallis 'Pardon Me' | Hosta 'White Feather' |
| Hemerocallis 'Pink Damask' | Hosta 'Wide Brim' |
| Hemerocallis 'Prairy Blue Eyes' | Hosta 'Zager's White Edge' |
| Hemerocallis 'Purple Bicolor' | Hosta 'Zounds' |
| Hemerocallis 'Sammy Russell' | Hottonia palustris |
| Hemerocallis 'Siloam French Doll' | Houstonia caerulea 'Alba' |
| Hemerocallis 'Stella de Oro' | Houstonia caerulea 'Millard’s Variety' |
| Hemerocallis 'Summer Wine' | Houttuynia cordata |
| Hepatica nobilis | Houttuynia cordata 'Chameleon' |
| Herniaria glabra | Houttuynia cordata 'Plena' |
| Hesperis matronalis | Humulus lupulus |
| Hesperis matronalis 'Alba' | Humulus lupulus 'Aureus' |
| Heuchera 'Amber Waves®' | Humulus lupulus 'Magnum' |
| Heuchera americana 'Eco Magnifolia' | Humulus lupulus 'Nordbrau' |
| Heuchera americana 'Ring of Fire' | Humulus lupulus 'Target' |
| Heuchera 'Beauty Colour' | Hydrocharis morsus-ranae |
| Heuchera brizoides 'Walker’s Variety' | Hylomecon japonicum |
| Heuchera 'Brownies' | Hypericum androsaemum |
| Heuchera 'Can Can' | Hypericum calycinum |
| Heuchera 'Cappucino' | Hypericum fragile |
| Heuchera 'Caramel®' | Hypericum 'Hidcote' |
| Heuchera 'Cascade Dawn' | Hypericum inodorum 'Elstead' |
| Heuchera 'Chocolate Ruffles' | Hypericum olympicum |
| Heuchera 'Chocolate Veil' | Hypericum olympicum 'Citrinum' |
| Heuchera micrantha 'Molly Bush' | Hypericum perforatum |
| Heuchera micrantha 'Palace Purple' | Hyssopus officinalis |