Hopa Crabapple
Hopseed Bush
Horsetail Tree
Howard McMinn Manzanita
Huachuca Agave
Hummingbird Sage, Pitcher Sage
Huntington Carpet Rosemary
Hybrid Gazanias
Hybrid Naked Lady
Hybrid Tea Rose (selections)
Hybrid White Rockrose
Hypericum Hidcote
Iceberg Floribunda Rose
Iceland Poppy
Idaho Locust
Imperial Bronze Bearded Iris
Improved Meyer Lemon
Incana Cranesbill
Incense Cedar
Indian Currant