Locust, Black (spp.) Locust, Black 'Frisia'
Locust, Black Golden Locust, Black 'Purple Robe'
Locust, Black 'Tortuosa' Locust, Bristly
Locust, Honey 'Elegantissima' Locust, Moss
Locust, New Mexico Locust, Thornless Honey 'Emerald Kascade'
Locust, Thornless Honey 'Halka' Locust, Thornless Honey 'Imperial'
Locust, Thornless Honey 'Moraine' Locust, Thornless Honey 'Shademaster'
Locust, Thornless Honey 'Skyline' Locust, Thornless Honey 'Summer Lace'
Locust, Thornless Honey 'Sunburst' Locust, Thornless Honey 'True Shade'
Locust, Thorny 'Elegantissima' Locust, Yellow (spp.)
Locust, Yellow 'Frisia' Locust, Yellow Golden
Locust, Yellow 'Purple Robe' Locust, Yellow 'Tortuosa'
Locust: neomexicana Locustberry
Lodgepole Pine Lodgepole Pine: contorta latifolia
Log Fern Long Leaf Ephedra
Long Spined Barrel Cactus Longleaf Pine
'Longspire' Virginia Sweetspire Longstalk Tickseed 'Flying Saucers ™'
'Lonica' American Arborvitae Loosestrife, Fringed (spp.)
Loosestrife, Fringed 'Purpurea' Loosestrife, Hairy (spp.)
Loosestrife, Hairy 'Purpurea' Loosestrife, Purple-leaved (spp.)
Loosestrife, Purple-leaved 'Purpurea' Loosestrife: lysii
Lotus, American Lotus, Indian (spp.)
Lotus, Indian 'Red Radiance' Lotus, Sacred (spp.)
Lotus, Sacred 'Red Radiance' 'Louis Edmunds' Carmel Creeper
Louisiana Iris: prismatica Louisiana Phlox (spp.)
Louisiana Phlox 'Blue Moon' Louisiana Phlox 'Montrose'
Louisiana Sage (spp.) Louisiana Sage 'Silver Queen'
Lousewort, Common 'Low Scape® Mound' Black Chokeberry
Low Spear Grass Lowbush Blueberry
Lowland White Fir Lucky Clover
'Lulu' Signet Marigold Lupine (spp.)
Lupine 'My Castle' Lupine 'Popsicle'
Lupine 'Russell Hybrid' Lupine 'The Governor'
Lupine, Big Leaf (spp.) Lupine, Big Leaf 'My Castle'
Lupine, Big Leaf 'Popsicle' Lupine, Big Leaf 'Russell Hybrid'
Lupine, Big Leaf 'The Governor' Lupine, Carolina
Lupine: fistulosa 'Lutea' American Arborvitae
'Lutea' Monterey Cypress 'Lutea Zebrina' American Arborvitae
Lyonia Lyonia, Fetterbush
Lyre-Leaf Sage 'Burgundy Bliss' Lyre-Leaf Sage 'Purple Knockout'
Mace Sedge Macho, Ocotillo
'Macopin' Eastern White Pine 'Macrophylla' Canadian Hemlock
Madrone, Pacific Madrone, Texas
'Magellan Coral' Common Zinnia