Common Name - -	Family : Order
Hairy St. John's wort - -	Hypericaceae : Theales
Handsome sage - -	Lamiaceae : Lamiales
Harlequin glorybower - -	Verbenaceae : Lamiales
Hartweg's cyphomandra - -	Solanaceae : Solanales
Heart leaved fig - -	Moraceae : Rosales
Hector's tree daisy - -	Asteraceae : Asterales
Heldreich's sage - -	Lamiaceae : Lamiales
Hemp agrimony - -	Asteraceae : Asterales
Herb christopher - -	Ranunculaceae : Ranunculales
Holboell's rockcress - -	Brassicaceae : Brassicales
Honduran mahogany - -	Meliaceae : Sapindales
Honohono - -	Orchidaceae : Asparagales
Hooded beauty - -	Araceae : Alismatales
Hoop petticoat daffodil - -	Amaryllidaceae : Asparagales
Horminum sage - -	Lamiaceae : Lamiales
Horned orchid - -	Orchidaceae : Asparagales
Horse phalaenopsis - -	Orchidaceae : Asparagales
Horsechestnut - -	Sapindaceae : Sapindales
Huntleya orchid - -	Orchidaceae : Asparagales
Hyacinth - -	Orchidaceae : Asparagales
Hybrid tea rose - -	Rosaceae : Rosales