Ivy: ciliatus, Swedish (spp.) Ivy: forsteri, Swedish 'Green on Green'
Ivy: forsteri, Swedish 'Marginatus' Ivy: Plectranthus , Swedish 'Lois Woodhull'
Ivy: Plectranthus , Swedish 'Nicodemus' Ivy: Plectranthus , Swedish 'Nicolleta'
Ivy: Plectranthus , Swedish 'Old Gold' Ivy: Plectranthus , Swedish 'Zulu Wonder'
'Izu No Hana' Bigleaf Hydrangea 'J. L. Pennock' White Enkianthus
'J.C. Williams' Camellia Jabillo
Jaburan Lilyturf Jacaranda
'Jack Catlin' Aeonium 'Jack Frost' Siberian Bugloss
Jack in the Pulpit, Japanese Jack in the Pulpit: ringens
Jack in the Pulpit: triphyllum Jack Pine
'Jack Spratt' Flax Jack Tree
Jackal's Tail Aloe Jackfruit
'Jackii' Siberian Crabapple Jackman Clematis (spp.)
Jackman Clematis 'Purpurea Superba' 'Jackmanii' Clematis: (n)
'Jackmanii' Shrubby Cinquefoil 'Jackpot' Tanacetum
'Jacob Cline' Bee Balm: didyma Jacobean Lily 'Superba'
Jacobinia Jacob's Coat (spp.)
Jacob's Coat 'Haleakala' Jacob's Coat 'Louisiana Red'
Jacob's Coat 'Obovata' Jacob's Coat 'Petticoat'
Jacob's Ladder 'Purple Rain' Jacob's Ladder, Creeping
Jacob's Ladder, Northern 'Heavenly Habit' Jacob's Rod (spp.)
'Jacqueline' Benjamin Fig 'Jacqueline' Crimson Flag
'Jacqueline' Dwarf Astilbe 'Jacqueline' Florist's Chrysanthemum
'Jacqueline Postill' Nepalese Paper Plant Jacquemontii Birch (spp.)
Jacquemontii Birch 'Kashmir White' 'Jade Frost' Flat Sea Holly
'Jade Gloss' Alumroot: Heuchera Jade Magic
Jade Plant Variegated Jade Plant, Silver
'Jade River' Creeping Juniper 'Jade Snowflake' Chinaberry
Jade Tree Variegated Jade, Baby (spp.)
Jade, Baby Variegated Jade, Chinese
Jaggery Palm 'Jaguar 3' Tall Fescue
Jamaica Caper 'Jamaica' Rose
Jamaica Sorrel Jamaica Vervain
Jamaican Croton (spp.) Jamaican Croton 'Chocolate'
Jamaican Dogwood Jamaican Palmetto
'Jambalaya' Daylily Jamberry
Jambolan Plum 'Jamboree Blue' Garden Petunia
'Jamboree Blue Vein' Garden Petunia 'Jamboree Burgundy' Garden Petunia
'Jamboree Hot Pink' Garden Petunia 'Jamboree Lavender II' Garden Petunia
'Jamboree Light Blue' Garden Petunia 'Jamboree Plum Vein' Garden Petunia
'James Brydon' Waterlily 'James Gurney' Waterlily
'James Macfarlane' Preston Lilac 'James' Plectranthus
Jamestown Weed 'Jan Bos' Dutch Hyacinth
'Jane' Magnolia 'Janelle' Allamanda
'Janet Craig Compacta' Dracaena: deremensis 'Janet Craig' Dracaena: deremensis
'Janet' Hosta 'Janice Brown' Daylily
'Janna' Rose 'Jan's Wedding' Rose