Kenilworth-Ivy Cymbalaria muralis Snapdragon (Figwort)
King Alfred's cakes (see Coal fungus)
King Devil/ Yellow Hawkweed Hieracium pratense Dandelion-Like
Knapweed, Spotted Centauria maculosa E Miscellaneous
Knotweed Virginia/ Jumpseed Tovara virginianum Buckwheat
Knotweed, Erect Polygonum erectum Buckwheat
Knotweed, Japanese/ Japanese Bamboo Polygonum cuspidatum Buckwheat
Knotweed, Prostrate/ Dooryard Weed Polygonum aviculare Buckwheat