Hahn's English Ivy
Halimiocistus
Hall's Japanese Honeysuckle
Hawaiian Elf Schefflera
Hawaiian Heather, False Heather
Heartleaf Bergenia
Heather Blush Bearded Iris
Heavy Metal Switch Grass
Hebe or Veronica 'Patty's Purple'
Helene Strybing Manuka Tea Tree
Heliotrope
Heliotrope Black Beauty
Hemstiched Bearded Iris
Hen and Chicks
Hetz Arborvitae
Hidcote Lavender
Holly Oak
Hollyhock
Hollyleaf or Islay Cherry