Top Ten Invasive Plants in Knox County

  1. Asian Bush Honeysuckles (Lonicera tatarica, L. maacki, L. x bella, & L. morrowii)
  2. Japanese Honeysuckle (Lonicera japonica)
  3. Wintercreeper (Euonymous fortune)
  4. Poison Hemlock (Conium maculatum)
  5. Autumn Olive (Elaeagnus umbellata)
  6. Multiflora Rose (Rosa multiflora)
  7. Tree of Heaven (Ailanthus altissima)
  8. Non-native Thistles (Musk, Bull, and Canada) (Carduus nutans, Cirsium vulgare, & C. arvense)
  9. Johnson Grass (Sorghum halepense)
  10. Burning Bush (Euonymous alatus)