X Heucherella 'Cinnamon Bear' X Heucherella 'Dayglow Pink'
X Heucherella 'Kimono' X Heucherella 'Silver Streak'
X Heucherella 'Viking Ship' X Heucherella alba 'Bridget Bloom'
X Heucherella alba 'Pink Frost' X Heucherella alba 'Rosalie'
X Heucherella tiarelloides 'Crimson Clouds' Hexastylis virginica
Hibanobambusa tranquillans Hibiscus 'Bou de Feu'
Hibiscus 'Coral Reef' Hibiscus 'Darby'
Hibiscus 'Fireball' Hibiscus 'Kopper King'
Hibiscus 'Lohengrin' Hibiscus 'Luau Peach Mai Tai'
Hibiscus 'Old Yella' Hibiscus 'Rose Satin'
Hibiscus 'Sweet Caroline' Hibiscus 'Tosca'
Hibiscus 'Turn of the Century' Hibiscus 'White Magic'
Hibiscus acetosella Hibiscus acetosella 'Coppertone (Red Shield)'
Hibiscus acetosella 'Haight Ashbury' Hibiscus acetosella 'Jungle Red'
Hibiscus coccineus Hibiscus moscheutos
Hibiscus moscheutos 'Anne Arundel' Hibiscus moscheutos 'Blue River II'
Hibiscus moscheutos 'Disco' Hibiscus moscheutos 'Disco Belle Mix'
Hibiscus moscheutos 'Disco Belle Pink' Hibiscus moscheutos 'Disco Belle Red'
Hibiscus moscheutos 'Disco Belle White' Hibiscus moscheutos 'Fantasia'
Hibiscus moscheutos 'Fireball' Hibiscus moscheutos 'Lady Baltimore'
Hibiscus moscheutos 'Lord Baltimore' Hibiscus moscheutos 'Luna Pink'
Hibiscus moscheutos 'Luna Red' Hibiscus moscheutos 'Plum Crazy'
Hibiscus moscheutos 'Southern Belle' Hibiscus moscheutos ssp. palustris
Hieracium lanatum Hieracium maculatum 'Leopard'
Hippeastrum 'Ruby Meyer' Hippeastrum 'Safari'
Hippeastrum 'Vera' Hippeastrum x hybridum
Hippeastrum x hybridum 'Masai' Hippeastrum x johnsonii
Hippeastrum papilio Hippuris vulgaris
Hohenbergia stellata Holcus mollis 'Albo-variegatus'
Homalomena sulcata Homeria collina
Homeria flaccida Hoodia currori
Hoodia gordonii Hordeum jubatum
Horminum pyrenaicum 'Pink Sunday'