Plants
- Habanera English DaisyBellis perennis ‘Habanera White with Red Tips’
- Habanero Chocolate Hot Pepper
- HaberleaHaberlea ferdinandi-coburgii
- Hairy BeardstonguePenstemon hirsutus
- Hairy Bitter-cressCardamine hirsuta
- Hairy Canary CloverLotus hirsutus
- Hairy Lip FernCheilanthes lanosa
- Hairy TareVicia hirsuta
- Hakone Grass 'All Gold'Hakonechloa macra
- Hakone grass 'Aureola'Hakonechloa macra 'Aureola'
- Hakonechloa 'Alboaurea'Hakonechloa macra 'Alboaurea'
- Halesia monticola 'Vestita'Halesia monticola 'Vestita'
- HalimiocistusHalimiocistus sahucii
- Halimiocistus 'Merrist Wood Cream'Halimiocistus wintonensis 'Merrist Wood Cream'
- HalimiumHalimium ocymoides
- HamamelisHamamelis
- Hamamelis intermedia 'Pallida'Hamamelis intermedia 'Pallida'
- Hamamelis intermedia 'Ruby glow'Hamamelis intermedia 'Ruby glow'
- Hamamelis virginianaHamamelis virginiana
- Hamamelis x intermedia 'Arnold Promise'Hamamelis x intermedia 'Arnold Promise'
- Hamamelis x intermedia 'Diane'Hamamelis x intermedia 'Diane'
- Hamamelis x intermedia 'Feuerzauber'Hamamelis x intermedia 'Feuerzauber'
- Hamamelis x intermedia 'Jelena'Hamamelis x intermedia 'Jelena'
- Hamamelis x intermedia 'Orange beauty'Hamamelis x intermedia 'Orange beauty'
- Hamamelis x intermedia 'Rubin'Hamamelis x intermedia 'Rubin'
- Hamamelis x intermedia 'Westerstede'Hamamelis x intermedia 'Westerstede'
- Hammerhead cactus. Peanut cactusChamaecereus silvestrii fm. Cristata
- Hankerchief Tree, Ghost TreeDavidia involucrata
- Happy WandererHardenbergia violacea
- Hard Fern Blechnum spicant
- Hard FernBlechnum gibbum
- Hard Shield Fern, Prickly Shield FernPolystichum aculeatum
- Hardheads, KnapweedCentaurea depressa var. major
- Hardy BegoniaBegonia grandis
- Hardy Geranium, CranesbillGeranium Cantabrigiense 'Cambridge'