H

Habit  [ Botany - Morphology ]

Habitat [ Ecology ]

Hair [ Botany ]

Hairy scales (Astrophytum anatomy) [ Botany ]

Hairlike [ Botany ]

Half-shade [ Botany ]

Halophytes [ Botany - Ecology ]

Hamate [ Botany ]

Haploid [ Genetics ]

Hard frost [  Horticulture ]

Hardening off [  Horticulture ]

Hardy - Hardiness [ Ecology - Horticulture ]

Harvest [ Agronomy - Horticulture]

Head [ Botany ]

Health - Healthy [ Botany - Biology - Phytopathology]

Heat [ Botany - Ecology - Horticulture]

Heat resistance [ Ecology - ]

Heat susceptible [ Horticulture ]

Helophytes [ Botany ]

Hemiepiphytes [ Botany ]

Herb- Herbaceous [ Botany ]

Herbarium [ Botany - Taxonomy ]

Herbicide [ Agronomy - Horticulture ]

Herbivorous - Herbivore [ Ecology ]

Heredity [ Genetics ]

Heritable [ Genetics - Biology ]

Hermaphrodite [ Botany - Biology ]

Hesperidium [ Botany ]

Heterosis [ Genetics ]

Heterotrophic [ Biology ]

Heterotypic synonyms [ Taxonomy ]

Heterozygosis - Heterozygote [ Genetics ]

Hibernal  [ Botany - Horticulture - Climatology ]

Hirsute [ Botany ]

Hoar frost [ Meteorology]

Holotype [ Taxonomy ]

Homogeneous [ Botany ]

Homologous [ Botany - Biology - Genetics - Chemistry]

Homoplasy - Homoplastic [ Biology ]

Homotypic synonyms [ Taxonomy ]

Homozygosis - Homozygotic [ Genetics ]

Honeydew [ Phytoparasitology - Phytopathology ]

Hook - Hooked [ Botany ]

Hormone [ Botany ]

Horny [ Botany ]

Hortensis [ Taxonomy ]

Horticulture [ Agronomy ]

Host [ Biology ]

Humid season [ Climatology ]

Humid - Humidity [ Horticulture - Climatology ]

Humus [ Agronomy - Pedology ]

Hyaline [ Botany ]

Hybrid - Hybridization [ Genetics ]

Hybrid vigour [ Genetics ]

Hydathode [ Botany ]

Hydration [ Botany - Biology]

Hydrogen [ Chemistry ]

Hydrophyte [ Botany ]

Hydro-repellent  [ Botany - Chemistry - Physics ]

Hydrostatic pressure[ Physics ]

Hygiene  [ Horticulture - Phytopathology ]

Hymenopterophily [ Botany ]

Hypanthium [ Botany ]

Hypha [ Botany ]

Hyperplasia [ Biology - Phytopathology ]

Hypertrophy [ Phytopathology ]

Hypo- [ Prefix ]

Hypocotyl [ Botany ]

Hypocotyl grafting [ Horticulture ]

Hypodermis [ Botany ]

Hypogynous [ Botany ]

Hypotrophy [ Biology - Phytopathology ]