The following species of vegetation are declared to be noxious and subject to control, subject to any exceptions as indicated.
PLANT SPECIES | EXCEPTIONS |
Canada thistle (Cirsium arvense) | None |
Crab grass (Digitaria sanguinalis) | None |
Johnson grass | May be grown only under permit from Purdue University Agricultural Experiment Station |
Marijuana (Cannabis sativa) | None |
Multiflora roses (Rosa multiflora) | Other species of roses grafted to multiflora rootstock may be planted and maintained; multiflora may be grown by licensed plant nurseries to provide rootstock, or by other persons under a permit from Purdue University Agricultural Experiment Station |
Poison ivy, oak or sumac (Rhus or Toxicodendron) | None |
Ragweed, common (Ambrosia artemisifolia) | None |
Ragweed, giant (Ambrosia trifida) | None |
Sorghum almum (Sorghum halpense) | None |
(`86 Code, Ch. 3, Art. 4, Sch. A)