Changes Made to Ohio’s Prohibited Noxious Weeds List

Source: Peggy Kirk Hall, Associate Professor, Agricultural & Resource Law (edited)

Palmer Amaranth

New changes to Ohio’s prohibited noxious weeds list took effect Friday, September 14th.  The Ohio Department of Agriculture (ODA) added 13 new species to the list, and removed 3 species.

On this blog, throughout the spring and summer I posted information and identification tips on each of the 21 Ohio noxious weeds.  This information can be easily found by typing “noxious weeds” in the Search this blog… box found on any page within our blog.  In the upcoming weeks, I will add similar posts for each of the new weeds added to this list.

Added to the list of prohibited noxious weeds are:

  • Yellow Groove Bamboo (Phyllostachys aureasculata), when the plant has spread from its original premise of planting and is not being maintained.
  • Field bindweed (Convolvulus arvensis).
  • Heart-podded hoary cress (Lepidium draba sub. draba).
  • Hairy whitetop or ballcress (Lepidium appelianum).
  • Perennial sowthistle (Sonchus arvensis).
  • Russian knapweed (Acroptilon repens).
  • Leafy spurge (Euphorbia esula).
  • Hedge bindweed (Calystegia sepium).
  • Serrated tussock (Nassella trichotoma).
  • Columbus grass (Sorghum x almum).
  • Musk thistle (Carduus nutans).
  • Forage Kochia (Bassia prostrata).
  • Water Hemp (Amaranthus tuberculatus).

Removed from the list are:

  • Wild carrot (Queen Anne’s lace) (Daucus carota L.).
  • Oxeye daisy (Chrysanthermum leucanthemum var. pinnatifidum).
  • Wild mustard (Brassica kaber var. pinnatifida).

Still on the list are:

  • Shatter cane (Sorghum bicolor).
  • Russian thistle (Salsola Kali var. tenuifolia).
  • Johnsongrass (Sorghum halepense).
  • Wild parsnip (Pastinaca sativa).
  • Grapevines: when growing in groups of one hundred or more and not pruned, sprayed, cultivated, or otherwise maintained for two consecutive years.
  • Canada thistle (Cirsium arvense).
  • Poison hemlock (Conium maculatum).
  • Cressleaf groundsel (Senecio glabellus).
  • Musk thistle (Carduus nutans).
  • Purple loosestrife (Lythrum salicaria).
  • Mile-A-Minute Weed (Polygonum perfoliatum).
  • Giant Hogweed (Heracleum mantegazzianum).
  • Apple of Peru (Nicandra physalodes).
  • Marestail (Conyza canadensis).
  • Kochia (Bassia scoparia).
  • Palmer amaranth (Amaranthus palmeri).
  • Kudzu (Pueraria montana var. lobata).
  • Japanese knotweed (Polygonum cuspidatum).

The revised list can be found online at Ohio Administrative Code § 901:5-37-01.

OSU’s Farm Office’s Ag Law Library has a law bulletin on Ohio’s Noxious Weed Laws.  It has been updated to reflect the changes, and is available here.

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