| Scientific Name | Common Name(s) | Life History | Growth Form | |
|---|---|---|---|---|
| Iris foetidissima L. | Stinking iris, Gladwin iris, coral iris | Perennial | forb | |
|
Iris orientalis | yellowband iris, Oriental iris, Turkish iris | Perennial | forb |
|
Iris pseudacorus | pale yellow iris | Perennial | forb |
|
Jacaranda mimosifolia | black poui , jacaranda | Perennial | tree |
|
Kniphofia uvaria | redhot poker, pokerplant, torchflower, torch-lily | Perennial | forb |
|
Koelreuteria paniculata | Goldenrain tree, Pride-of-India, Varnish tree | Perennial | tree |
|
Lagerstroemia indica | crapemyrtle | Perennial | shrub |
| Lagerstroemia indica 'Natchez' | Natchez Crape Myrtle | Perennial | tree | |
|
Lamiastrum galeobdolon | yellow archangel | Perennial | forb |
|
Lamium maculatum | Spotted deadnettle | Perennial | forb |
| Lamium maculatum 'Beacon Silver' | Deadnettle | |||
|
Lantana camara | lantana, common lantana, wild sage | Perennial | shrub |
|
Lathyrus latifolius | Perennial sweet pea | Perennial | forb |
|
Lathyrus nissolia | grass vetchling, grassy vetch, grass pea | Annual | forb |
| Lathyrus tingitanus | Tangier pea | |||
|
Leonotis nepetifolia | klip dagga, Christmas candlestick, lion's ear | Perennial | shrub |
|
Leptospermum laevigatum | Australian teatree, Australian myrtle | Perennial | shrub |
|
Leucaena leucocephala | White Lead Tree | Perennial | tree |
|
Leucanthemum vulgare | oxeye daisy, field daisy, lilita (Spanish, El Salvador) , margarita (Spanish, Costa Rica), marguerite (English, United States) , moon-daisy (English, El Salvador) , ox-eye daisy (English, El Salvador) , poorland-flower, white daisy, yellow daisy, white-weed, dog daisy, margriet , white daisy, whiteweed, yellow daisy, poverty weed, mid-summer daisy, moon-penny, bull daisy, button daisy | Perennial | forb |
| Leymus arenarius 'Blue Dune' | Sand Ryegrass | Perennial | grass | |
|
Ligustrum japonicum | Japanese privet, wax-leaf privet | Perennial | shrub |
| Ligustrum japonicum 'Recurvifolium' | Curled-Leaf Privet | Perennial | shrub | |
| Ligustrum lucidum | Chinese privet, Glossy privet | Perennial | tree | |
| Ligustrum ovalifolium | California privet, garden privet | Perennial | shrub | |
|
Ligustrum sinense | Chinese privet | Perennial | shrub |