| Common Name | Latin Name |
|---|---|
| Japanese Bamboo | Polygonum cuspidatum |
| Japanese Clover | see Common Lespedeza |
| Japanese Honeysuckle | Lonicera japonica |
| Japanese Hops | Humulus japonicus |
| Japanese Knotweed | see Japanese Bamboo |
| Japanese Silverberry | see Autumn Olive |
| Japanese Stiltgrass | Microstegium vimineum var. imberbe |
| Jerusalem Artichoke | Helianthus tuberosus |
| Jewelweed | see Touch-me-not |
| Jimsonweed | Datura stramonium |
| Johnsongrass | Sorghum halepense |
| Jointhead Arthraxon | Arthraxon hispidus |
