Heliopsis, Sunflower (spp.) Heliopsis, Sunflower 'Ballerina'
Heliopsis, Sunflower 'Summer Sun' Hell Vine (spp.)
Hell Vine 'Crimson Trumpet' Hell Vine 'Flava'
'Hello Yellow' Butterfly Weed: tuberosa 'Hemisphaerica' Common Juniper
Hemlock, Canadian (spp.) Hemlock, Canadian 'Coles Prostrate'
Hemlock, Canadian 'Frosty' Hemlock, Canadian 'Lewisii'
Hemlock, Canadian 'Macrophylla' Hemlock, Canadian 'Sargentii'
Hemlock, Canadian Weeping Hemlock, Carolina
Hemlock, Eastern (spp.) Hemlock, Eastern 'Coles Prostrate'
Hemlock, Eastern 'Frosty' Hemlock, Eastern 'Lewisii'
Hemlock, Eastern 'Macrophylla' Hemlock, Eastern 'Sargentii'
Hemlock, Eastern Weeping Hemlock, Mountain
Hemlock, Western Hemp Vine, Climbing
Hempweed, Climbing Hen and Chicks 'Red Edge'
Hen and Chicks: colorata Hen and Chicks: derenbergii
Hen and Chicks: dowingo Hen and Chicks: elegans
Hen and Chicks: imbricatahybrid Hen and Chicks: peacockii
Hen and Chicks: potosina Hen and Chicks: pulidonis
Hen and Chicks: secunda glauca Hen and Chicks: simulans
Henderson's Shooting Star 'Henry Eilers' Sweet Coneflower
'Henry Hicks' Laurel Magnolia 'Henry's Garnet' Virginia Sweetspire
Hens and Chicks, Mexican Hepatica
Hepatica, Round Lobed Hepatica, Sharp-lobed
'Herbert' American Blueberry 'Herbstsonne' Shiny Coneflower
Hercule's Club Hercules' Club
'Heritage' Southern Live Oak Hesper Palm (spp.)
Hesper Palm 'Elegans' Hesperaloe, Giant
Hesperaloe, Night Blooming Hesperaloe, Red
'Hibernica' Common Juniper Hickory
Hickory, Bitternut Hickory, Broom
Hickory, Mockernut Hickory, Pignut
Hickory, Shagbark (spp.) Hickory, Shagbark 'Grainger'
Hickory, Shellbark Hickory, Swamp
Hickory, Water Hickory, White Heart
Hickory: ovata pubescens, Shagbark High Tide Bush
Highbush Blueberry (spp.) Highbush Blueberry 'Herbert'
Highbush Cranberry (spp.) Highbush Cranberry 'Alfredo'
Highbush Cranberry 'Compactum' Highbush Cranberry Dwarf
Highbush Cranberry 'Wentworth' 'Highrise' Southern Live Oak
'Hillspire' Eastern Red Cedar Himalayan Foxtail Lily
Hinkley's Yellow Columbine Hispaniolan Palmetto
Hispaniolan Royal Palm Hog Cranberry (spp.)
Hog Cranberry 'Massachusetts' Hog Cranberry 'Microphylla'
Hog Gum