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Halleria lucida
Haplopappus foliosus
Haworthia cooperi var. pilifera
Haworthia cymbiformis
Haworthia cymbiformis var. setulifera
Haworthia emelyae
Haworthia glabrata
Haworthia maraisii
Haworthia pygmaea
Haworthia truncata
Haworthia viscosa
Helichrysum basalticum
Helichrysum splendidum
Heliotropium arborescens
Helmholtzia glaberrima
Hemerocallis 'Cinderella's Dress'
Hemerocallis 'Lusty Lealand'
Hemerocallis 'Strutter's Ball'
Hemizonia minthornii
Hesperaloe funifera
Hesperaloe parviflora
Heterotheca sessiliflora
Hibbertia aspera
Hibiscus denudatus
Homalocladium platycladum
Horkelia clevelandii
Hosta 'Abiqua Blue Crinkles'
Hosta fortunei 'Picta'
Hosta plantaginea
Hydrangea heteromalla
Hydrangea macrophylla
Hydrangea serrata
Hymenoclea salsola
Hymenoxis acaulis
Hypericum 'Hidcote'
Hypericum uralum
Hyptis emoryi
