Jerusalemartichoke _Helianthus tuberosus_ 44 Jimsonweed _Datura stramonium_ 41 Jobstears _Coix_ 20 Joepyeweed _Eupatorium_ 42 Johnnyjumpup _Viola kitaibeliana_ var. _rafinesquii_ 55 Johnsongrass _Sorghum halepense_ 25 Jointtail _Manisuris_ 22 Junegrass _Koeleria_ 22 Juniper _Juniperus_ 57 Kale _Brassica oleracea_ var. _acephala_ 38 Kidneyvetch _Anthyllis_ 30 Kikuyugrass _Pennisetum clandestinum_ 24 Knapweed, Russian _Centaurea repens_ 38 Knotgrass _Paspalum distichum_ 24 Knotweed _Polygonum_ 50 Kochia _Kochia_ 45 Krameria _Krameria_ 45 Kudzu _Pueraria_ 33 Kuhnia _Kuhnia_ 45 Lacegrass _Eragrostis capillaris_ 21 Ladiestresses _Spiranthes_ 30 Ladyslipper _Cypripedium_ 29 Lambsquarters _Chenopodium album_ 39 Larkspur _Delphinium_ 41 Lawngrass, Japanese _Zoysia japonica_ 26 Leadplant _Amorpha canescens_ 30, 55 Lentil _Lens_ 32 Lespedeza _Lespedeza_ 32, 57 Lettuce _Lactuca_ 46 Licorice _Glycyrrhiza_ 32 Lilac _Syringa_ 59 Lily _Lilium_ 29 Linden _Tilia_ 59 Lionsheart _Physostegia_ 50 Lipfern _Cheilanthes_ 28 Lippia _Lippia_ 46 Lobelia _Lobelia_ 47 Loco _Astragalus_ 30 Locust _Robinia_ 34, 58 Lomatium _Lomatium_ 47 Longtom _Paspalum lividum_ 24 Loosestrife _Lysimachia_ 47