Major items
| Organic | Scientific name | Common name | Part | Origin |
| Haageocereus acranthus | America | |||
| Haageocereus chalaensis | America | |||
| Haageocereus chosicensis | America | |||
| Haageocereus divaricactispinus | America | |||
| Haematoxylum brasiletto H Karst | Brazilwood | bark | C-America | |
| Haematoxylum campechianum L | Logwood | |||
| Hagenia abyssinica (Bruce) J F Gmel | Kosso | |||
| Hamamelis virginiana L | Witch Hazel | |||
| Hamatocactus hamatacanthus | America | |||
| Hamatocactus setispinus | America | |||
| Hamatocactus sinuatus | Turk's Head | America | ||
| Hamelia patens Jacq | Firebush, Hummingbird bush | leaf, root | C-America | |
| Handroanthus heptaphyllus (Vell) Mattos | Ipe roxo | bark | S-America | |
| Handroanthus impetiginosus (Mart ex DC) MattosPau d'Arco | ||||
| Handroanthus ochraceus (Cham) Mattos subsp Ochraceus | Golden trumpet tree | root | C-America | |
| Hansenia forbesii (H Boissieu) Pimenov & Kljuykov | rhizome, root | China | ||
| Hansenia weberbaueriana (Fedde ex H Wolff) Pimenov & Kljuykov | rhizome, root | China | ||
| Haronga madagascariensis (Lam ex Poir) ChoisyDragon's Bloodtreemadagascariensis Lam ex Poir) | dragon's bloodtree | |||
| Harpagophytum procumbens (Burch)DC Ex Meisn | Devil's Claw | tuber | South Africa | |
| Harpagophytum zeyheri Decne | Devil's Claw | tuber | South Africa | |
| Harrisia divaricata | America | |||
| Harrisia martinii | America | |||
| Harrisia taetra | America | |||
| Harungana madagascariensis Lam ex Poir | Dragon's Bloodtree | bark | Africa | |
| Hatiora salicornioides | America | |||
| Hebanthe eriantha (Poir) Pedersen | Suma | root WC, cut | N-America | |
| Hedera helix L | Ivy | leaf | ||
| Hedychium coronarium J Koenig | SE Asia | |||
| Helcia sanguinolenta | Ecuador | |||
| Helianthus annuus L | Sunflower | |||
| Helianthus tuberosus L | Jerusalem Artichoke | tuber | ||
| Helichrysum arenarium (L) Moench | Sandy Everlasting | flower | E-Europe | |
| bio | Helichrysum italicum (Roth) G Don | Helichrysum, Everlasting | herb | SE-Europe |
| Helichrysum odoratissimum (L) Sweet | Iphepho | herb | S-Africa | |
| Helicteres isora L | Indian screw tree | Indian Sub | ||
| Heliocereus speciosus | America | |||
| Heliotropium indicum L | Indian Heliotrope | leaf | Africa | |
| Heliotropium lasiocarpum Fisch & C A Mey | ||||
| Helonias dioica (Walter) Pursh (syn ChamaeliriumDevil's bit(L) A Gray) | luteum | |||
| Hemidesmus indicus (L) W T Aiton | East Indian Sarsaparilla | |||
| Heracleum lehmannianum Bunge | Hog Weed | herb | Central Asia | |
| Heracleum persicum Desf | Persicum | seed | MidEast | |
| Heracleum sphondylium L | Common Hogweed | herb | W-Europe | |
| Herniaria glabra L | Herniary | |||
| Heterotaxis discolor | Ecuador | |||
| Heterotaxis equitans | Ecuador | |||
| Heterotheca inuloides Cass | False Arnica | C-America | ||
| Hibiscus abelmoschus L (syn Abelmoschus moschatusOkra | Musk okra | |||
| Hibiscus rosa-sinensis L | Chinese Hibiscus | leaf, flower | C-America | |
| Hibiscus sabdariffa L | Hibiscus | calix | Africa | |
| Hibiscus sabdariffa L | Red Sorrel | W-Africa | ||
| Hibiscus sagittifolius Kurz (syn Abelmoschus moschatus Medik subsp tuberosus (Span) Borss Waalk) | SE Asia | |||
| Hieracium pilosella L (syn Pilosella officinarumVaill) | Mouse Ear Hawkweed | herb | ||
| Hierochloe odorata (L) P Beauv (syn AnthoxanthumGrass (Weber) Schouten & Veldkamp) | holy grass | herb | E-Europe | |
| Hieronyma alchorneoides Allemão | Suradan, Mascarey | bark, flower, seed | C-America | |
| Hildewintera aureispina | America | |||
| Hildewintera colademononis | America | |||
| Hippophae rhamnoides L | Seabuckthorn | berry | Siberia | |
| Holarrhena antidysenterica (G Don) Wall ex A DC (syn Holarrhena pubescens Wall ex G Don) | Conessi | |||
| Holarrhena floribunda (G Don) T Durand & Schinz | False rubber tree | stem bark, root | Africa | |
| Holarrhena pubescens Wall ex G Don | Conessi | bark | ||
| Holcoglossum subulifolium | Ecuador | |||
| Homalomena occulta (Lour) Schott | rhizome | SE Asia | ||
| Hoodia gordonii (Masson) Sweet ex Decne | Hoodia | herb | South Africa | |
| Hordeum vulgare L | Barley | fruit | China | |
| Hoslundia opposita Vahl | Kamyuye | herb | W-Africa | |
| Houlletia odoratissima | Ecuador | |||
| Houlletia tigrina | Ecuador | |||
| Houlletia wallisii | Ecuador | |||
| Houttuynia cordata Thunb | Chameleon Plant | herb | SE Asia | |
| Huernia sudanensis | America | |||
| bio | Humulus lupulus L | Hop | cone | SE-Europe |
| Hura brasiliensis Wild (syn Hura crepitans L) Sandboxtree | ||||
| Hura crepitans L | Sandboxtree | |||
| Hydnocarpus kurzii (King) Warb | Chaulmoogra | |||
| Hydrangea arborescens L | Wild hydrangea | |||
| Hydrastis canadensis L | Goldenseal | herb | N-America | |
| Hydrocotyle asiatica L (syn Centella asiatica (L)Indian Pennywort | indian pennywort | |||
| Hygrophila auriculata (Schumach) Heine | Hygrophila | |||
| Hylocereus costaricensis (FAC Weber) Britton &Pithaya | Pithaya | leaf, fruit | C-America | |
| Hylocereus polyrhizus (F A C Weber) Britton & Rose | Pithaya | fruit | Americas | |
| Hylocereus purpusii(Hylocerus undatus) | America | |||
| Hymenaea courbaril L | Jatoba | bark | S-America | |
| Hymenaea verrucosa Gaertn | East African Copal | gum | W-Africa | |
| Hyoscyamus niger L | Black henbane | seed | China | |
| bio | Hypericum perforatum L | St John's Wort | herb | SE-Europe |
| Hypericum revolutum Vahl | Currybush | E-Africa | ||
| Hypericum scabrum L | herb | Central Asia | ||
| Hypodaphnis zenkeri (Engl) Stapf | bark | W-Africa | ||
| Hypoxis hemerocallidea Fisch & CA Mey | African Potato | rhizome | E Africa | |
| Hyptis spicigera Lam | Black Sesame | whole plant | W-Africa | |
| Hyptis suaveolens (L) Poit | American Mint | aerial part, seed | C-America | |
| Hyptis verticillata Jacq | Mata dolor | leaf | C-America | |
| Hyssopus officinalis L | Hyssop | S-America | ||
| Hamamelis | Witch Hazel | Leaf | N-America | |
| CITES | Hydrastis canadensis | Goldenseal | Root, Herb | N-America |
