'Ink Blot' Heartleaf Foamflower Ink Bush
Inkberry Inkberry Holly (spp.)
Inkberry Holly 'Chamzin (Nordic™)' Inkberry Holly 'Compacta'
Inkberry Holly 'Densa' Inkberry Holly 'Ivory Queen'
Inkberry Holly 'Nigra' Inkberry Holly 'Shamrock'
Inkwood Inland Coast Live Oak
'Intensa Pink' Amaranth: hybrid Interior Live Oak
Interrupted Fern 'Intertexta' Lawson's Cypress
'Invincibelle® Spirit' Smooth Hydrangea: arborescens Iris, Beach Head
Iris, Beardless Iris, Del Norte County
Iris, Douglas Iris, Dwarf Crested (spp.)
Iris, Dwarf Crested White Iris, Dwarf Violet
Iris, Japanese (spp.) Iris, Japanese 'Natsusugata'
Iris, Japanese 'Purple and Gold' Iris, Mountain
Iris, Virginia 'Purple Fan' Iris, Walking
Iris, Zigzag Iris: prismatica, Louisiana
'Irish Eyes' Black-eyed Susan 'Irish Eyes' Creeping Zinnia
'Iron Butterfly' Narrow Leaf Ironweed Ironweed, Narrow Leaf 'Iron Butterfly'
Ironweed, New York Ironwood
Ironwood, Black Ironwood, Desert
Ironwood: caroliniana Ironwood: confusa
Ironwood: paniculata Ironwood: tesota
'Iseli Fastigiata' Colorado Spruce 'Iseli Foxtail' Colorado Spruce
Island Bush Snapdragon Island Gooseberry
Island Oak Island Shrub Mallow
Island Tree Poppy Islay
'Ivory Queen' Gallberry Holly Ivy Palm, Australian (spp.)
Ivy Palm, Australian 'Amate™' Ivy, Mexican (spp.)
Jack in the Pulpit: triphyllum Jack Pine
Jackal's Tail Aloe 'Jacob Cline' Bee Balm: didyma
Jacobean Lily 'Superba' Jacob's Ladder, Creeping
Jamaica Caper Jamaican Dogwood
Jamberry Jamestown Weed
Japanese Iris (spp.) Japanese Iris 'Natsusugata'
Japanese Iris 'Purple and Gold' Japanese Poinsettia (spp.)
Japanese Poinsettia 'Yokoi's White' Jasmine, Carolina
Jasmine, West Indian Jeffery's Pine
'Jekyll' Crossvine Jelly Beans
Jersey Pine Jessamine, Early (spp.)
Jessamine, Yellow 'Jewels' Creeping Snapdragon
Jewels Of Opar (spp.) Jimbrush Ceanothus
Jimsonweed 'JN2 (The Rising Sun™)' Eastern Redbud
Joe Pye Weed (spp.) Joe Pye Weed 'Gateway'
Joe Pye Weed 'White Joe' Joe Pye Weed, Sweet (spp.)
Joe Pye Weed, Sweet 'Gateway' Joe Pye Weed, Sweet 'White Joe'
Joe Pye Weed: maculatum Joe Pye Weed: purpureum atropurpureum
Joewood Johnny Jump-Up
'Johns' American Elderberry Jojoba
'Jolly Red' Winterberry: verticillata Joseph's Coat: ficoidea 'Brilliant'
Joshua Tree: brevifolia 'Joyce Coulter' Ceanothus: hybrid