UMass Extension Weed Herbarium
| Common Name | Scientific Name | Family Name | |
|---|---|---|---|
| Kenilworth ivy | Cymbalaria muralis | Scrophulariaceae - Figwort Family | |
| king devil | see - hawkweed | ||
| king-of-the-meadow | see - meadow rue, tall | ||
| knapweed, spotted | Centaurea maculosa | Asteraceae (Compositae) - Aster or Sunflower Family | |
| knawel | Scleranthus annuus | Caryophyllaceae - Pink Family | |
| knotweed, black fringed | Polygonum cilinode | Polygonaceae - Smartweed or Buckwheat Family | |
| knotweed, German | see - knawel | ||
| knotweed, giant | Polygonum sachalinense | Polygonaceae - Smartweed or Buckwheat Family | |
| knotweed, Japanese | Polygonum cuspidatum | Polygonaceae - Smartweed or Buckwheat Family | |
| knotweed, Mexican | see - knotweed, Japanese | ||
| knotweed, pink | see - smartweed, Pennsylvania | ||
| knotweed, prostrate | Polygonum aviculare | Polygonaceae - Smartweed or Buckwheat Family | |
| knotweed, Virginia | Tovara virginiana | Polygonaceae - Smartweed or Buckwheat Family | |
| kochia | Kochia scoparia | Chenopodiaceae - Goosefoot Family | |
| kudzu | Pueraria montana | Fabaceae (Leguminosae) - Pea or Bean Family | |
| kudzu vine | see - kudzu |