Hidcote Goldencup Hypericum
Holly Oak, Holm Oak
Hollyhock
Hollywood Twisted Juniper
Homestead Purple Verbena
Honey Bush
Honey Locust, Sweet L., Honeyshuck
Honey or Texas Mesquite
Hopseed Bush, 'a'ali'i
Horsetail Rush
Horsetail Tree
Howard McMinn Manzanita
Hummingbird or Pitcher Sage
Huntington Carpet Rosemary
Hybrid Forsythia
Hybrid Mimulus selections
Hybrid Tea Rose cultivar
Hybrid White Rockrose
Iceland Poppy
Idaho Locust
