Knapweeds – Pokeweed
- Weeds: Knapweeds – Centaurea spp.
- Weeds: Knotweeds (Bohemian, Giant, Japanese, Himalayan) – Polygonum spp.
- Weeds: Kochia – Kochia scoparia
- Weeds: Lambsquarters, common – Chenopodium album
- Weeds: Lesser celandine – Ficaria verna
- Weeds: Liverworts – Several species
- Weeds: Mallow, common (Cheeseweed, Buttonweed) – Malva neglecta
- Weeds: Nightshades – Solanum spp.
- Weeds: Oxalis (Creeping woodsorrel) – Oxalis corniculata
- Weeds: Parrotfeather and Eurasian watermilfoil – Myriophyllum spp.
- Weeds: Pineappleweed – Matricaria discoidea
- Weeds: Plantain (Broadleaf, Buckhorn) – Plantago spp.
- Weeds: Poison hemlock – Conium maculatum
- Weeds: Poison ivy and Poison oak – Toxicodendron spp. (Rhus spp.)
- Weeds: Pokeweed: Phytolacca americana