Ohio Agricultural Law Blog--Changes made to Ohio's prohibited noxious weeds list

By:Peggy Kirk Hall, Attorney and Director, Agricultural & Resource Law Program Wednesday, September 19th, 2018

New changes to Ohio’s prohibited noxious weeds list took effect last Friday, September 14th.  In a previous blog post, we explained that the Ohio Department of Agriculture (ODA) was considering an update to the list as part of a mandatory five year review of all administrative rules.  ODA ultimately added 13 new species to the list, and removed 3 species.

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.  Readers may recall that the 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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