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Common and Latin names |
Plant Type, Hardiness |
Blooming Time |
 |
Hairy Vetch
Vicia villosa |
Wild flower, ground cover
More information |
Summer |
 |
Hardy Hibiscus, swamp mallow
Hibiscus spp. |
Perennial shrub, zone 3-11
Link to hardy hibiscus page |
Summer |
 |
Hardy Water Lily
Nymphaea sp. |
Water plant, zone 4-11
Link to hardy water lily page |
Summer |
 |
Hebe
Hebe spp. |
Shrub/tree, zone 6-10
More information |
Summer |
 |
Heliconia, Lobster-claw
Heliconia rostrata |
Tropical shrub, zone 10-11
More information |
Spring-Summer |
 |
Heliconia, Parrot's beak,
Parakeet flower
Heliconia psittacorum |
Tropical plant, zone 10-11
Heliconia society |
Spring-Summer |
 |
Heliotrope
Heliotropium arborescens |
Tropical shrub, zone 10
More information |
Summer |
 |
Hibiscus, Rose mallow
Hibiscus moscheutos |
Perennial, zone 5-9
More information |
Summer |
 |
Hibiscus, tropical
Hibiscus rosa-sinensis |
Tropical shrub, zone 9-11
Link to hibiscus page |
Summer |
 |
Hollyhock
Alcea rosea |
Summer, zone 2-9
More information |
Summer |
 |
Honeysuckle
Lonicera spp. |
Perennial, zone 4-9
More information |
Spring |
 |
Horned Violet
Viola cornuta |
Perennial, zone 6-9
More pictures of pansy-violet
More information |
Late Spring to early Summer |
 |
Hosta, Funkia
Hosta spp. |
Perennial, zone 3-8
Hosta Society |
Summer |
 |
Hoya, wax plant or shooting star
Hoya spp. |
Tropical vine, zone 9-11
International Hoya Association |
Summer |
 |
Hyacinth, common
Hyacinthus orientalis |
Bulb, zone 3-7
Link to Hyacinth page
More information |
Spring |
 |
Hyacinth bean
Lablab purpureus |
Annual vine
More information |
Summer |
 |
Hydrangea
Hydrangea spp. |
Parennial shrub, zone 4
Q&A about hydrangea |
Summer |