Plants
- Honesty 'Munstead Purple'Lunaria annua 'Munstead Purple'
- Honesty 'Variegata'Lunaria annua 'Variegata'
- Honey bushMelianthus major
- honey garlicAllium siculum (syn. Nectaroscordum sicilum)
- Honey Locust,'Sunburst'Gleditisia triacanthos 'Sunburst'
- HoneysuckleLonicera periclymenum
- Honeysuckle (Lonicera)
- Honeysuckle - Winter floweringLonicera x purpusii
- Honeywort 'Purpurascens'Cerinthe major 'Purpurascens'
- Hook SedgeUncinia egmontiana
- Hop Humulus lupulus
- Hop treePtelea trifoliata
- Hornbeam MapleAcer carpinifolium
- Horned HollyIlex cornuta
- Horned PansyViola cornuta
- Horse-chestnut Aesculus hippocastanum
- Horse-radish Armoracia rusticana
- Horseradish, 'Variegata'Armoracia rusticana 'Variegata'
- Horsetail, Scouring RushEquisetum hyemale
- Hortensia 'Hamburg'Hydrangea macrophylla 'Hamburg'
- Hortensia 'Schneeball'Hydrangea macrophylla 'Schneeball'
- HortensieHydrangea paniculata 'Pink Diamond'
- Hortensie 'Phantom'Hydrangea paniculata 'Phantom'
- Hosta
- Hosta "Sharmon'
- Hosta ' Whirlwind'
- Hosta 'American Halo'Hosta hybrid 'American Halo'
- Hosta 'August Moon'Hosta 'August Moon'
- hosta 'big daddy'hosta 'big daddy'
- Hosta 'Birchwood Parky's Gold'Hosta 'Birchwood Parky's Gold'
- Hosta 'Blue Angel'Hosta 'Blue Angel'
- Hosta 'Blue Cadet'Hosta 'Blue Cadet'
- Hosta 'Blue Ivory'Hosta hybrid 'Blue Ivory'
- Hosta 'Blue Mouse Ears'
- Hosta 'Brim Cup'