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Missouri: invasive & noxious plant laws

RSMo § 263.190 defines noxious weeds as those the Department of Agriculture designates by rule, requires owners to control them to prevent seeding, and states that "all sales of noxious weed species are prohibited." The list is 2 CSR 70-45.005 (12 species, effective March 30, 2012).

Official sources

Noxious weed (2 CSR 70-45.005) — sale prohibited (RSMo § 263.190.4); owners must control (12)

Scientific nameCommon name / notes
Cirsium arvenseCanada thistle
Dipsacus fullonumcommon teasel
Dipsacus laciniatuscutleaf teasel
Convolvulus arvensisfield bindweed
Sorghum halepenseJohnson grass
Pueraria montanakudzu
Cannabis sativamarijuana
Rosa multifloramultiflora rose
Carduus nutansmusk thistle
Lythrum salicariapurple loosestrife, and any hybrids
Onopordum acanthiumScotch thistle
Centaurea stoebespotted knapweed, all subspecies

Check plants against Missouri law →

Informational only, not legal advice. Lists change; always check the official source linked above before you buy, sell, plant or move a plant. Lists checked 2026-10-14.