Hickory Hickory Wattle
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 'Hicksii' Anglojapanese Yew
'Hidcote' English Lavender 'Hidcote Pink' Bearded Tongue: Penstemon
Hidden Lily Ginger (spp.) Hidden Lily Ginger 'Emperor'
Hidden Lily Ginger: roscoeana (spp.) Hidden Lily Ginger: roscoeana 'White Flame'
Hidden Lily Ginger: zedoaria 'Hidden World' Tall Bearded German Iris
Higan Cherry 'Pandora' Higan Cherry (spp.)
Higan Cherry 'Autumnalis' Higan Cherry 'Tai-Haka'
Higan Cherry Weeping 'Higasayama Broom' Japanese Maple
'Higashi yama' Japanese Maple 'High Contrast' Lungwort: hybrid
High Mallow 'Zebrina' High Tide Bush
'Highbeam®' Overcup Oak Highbush Blueberry (spp.)
Highbush Blueberry 'Herbert' Highbush Blueberry 'Sunshine Blue'
Highbush Cranberry (spp.) Highbush Cranberry 'Alfredo'
Highbush Cranberry 'Compactum' Highbush Cranberry Dwarf
Highbush Cranberry 'Wentworth' 'Highland Cream' Creeping Thyme
'Highlander' Japanese Holly 'Highpoint®' Nuttall's Oak
'Highrise' Southern Live Oak 'Hightower®' Willow Oak
Hill Banksia 'Hillside Creeper' Scots Pine
'Hillside Pink Sheffield' Florist's Chrysanthemum 'Hillspire' Eastern Red Cedar
'Hilo Beauty' Elephant's Ear: Alocasia 'Hilo Holiday' Rex Begonia
Himalaya Honeysuckle (spp.) Himalaya Honeysuckle 'Golden Lanterns®'
Himalaya Honeysuckle 'Purple Rain' Himalaya Pieris
Himalayan Birch Himalayan Blue Poppy (spp.)
Himalayan Blue Poppy 'Lingholm' Himalayan Cypress
Himalayan Fleece Flower (spp.) Himalayan Fleece Flower 'Border Jewel'
Himalayan Foxtail Lily Himalayan Gloxinia
Himalayan Hemlock Himalayan Indigo
Himalayan Mint Shrub Himalayan Musk Rose
Himalayan Pine 'Hime-kan-suge' Sedge
Hindu Datura (spp.) Hindu Datura 'Flore Pleno'
Hindu Rope Plant (spp.) Hindu Rope Plant Variegated
Hinkley's Yellow Columbine 'Hino' Japanese Cedar
'Hinodegire' Kurume Azalea Hinoki False Cypress (spp.)
Hinoki False Cypress 'Coralliformis' Hinoki False Cypress 'Crippsii'
Hinoki False Cypress Dwarf Hinoki False Cypress 'Elmwood Gold'
Hinoki False Cypress 'Fernspray Gold' Hinoki False Cypress 'Flabelliformis'
Hinoki False Cypress Golden Hinoki False Cypress 'Gracilis'
Hinoki False Cypress 'Juniperioides Aurea' Hinoki False Cypress 'Kosteri'
Hinoki False Cypress 'Mariesii' Hinoki False Cypress 'Nana Aurea'
Hinoki False Cypress 'Nana Gracilis' Hinoki False Cypress 'Nana Lutea'
Hinoki False Cypress 'Nana Tonia' Hinoki False Cypress 'Reis Dwarf'
Hinoki False Cypress 'Rigid Dwarf' Hinoki False Cypress 'Sanderi'
Hinoki False Cypress 'Spiralis Aurea' Hinoki False Cypress 'Split Rock'
Hinoki False Cypress 'Tetracona Aurea' Hinoki False Cypress 'Torulosa'