Heartleaf Bergenia, Winter Bergenia
Heather Blush Bearded Iris
Hedge Lavender, Lavandin
Helene Strybing Manuka Tea Tree
Heliotrope Black Beauty
Hen and Chicks
Hidcote English Lavender
Hoiry-Leaved Lilac
Holly Oak or Holm Oak
Hollyhock
Hollyleaf or Islay Cherry
Hollywood Twisted Juniper
Homestead Purple Verbena
Honey Bush
Honey Myrtle, Granite-Bottlebrush
Honeywort
Hopseed Bush, 'a'li'i
Horsetail Reed
Horsetail Tree
Howard McMinn Manzanita