The Bremer County IRVM program is responsible for upholding the Iowa Weed Law (Chapter 317, code of Iowa). The Iowa Weed Law defines noxious weeds as:
For a full copy of the current Iowa Weed Law, please visit
Every county in Iowa has a weed commissioner to oversee that County’s noxious weed control program.
Primary noxious weeds
- quack grass (Agropyron repens)
- perennial sow thistle (Sonchus arvensis)
- Canada thistle (Cirsium arvense)
- bull thistle (Cirsium lanceolatum)
- European morning glory/field bindweed (Convolvulus arvensis)
- horse nettle (Solanum carolinense)
- leafy spurge (Euphorbia esula)
- perennial pepper-grass (Lepidium draba)
- Russian knapweed (Centaurea repens)
- buckthorn (Rhamnus, not to include Rhamnus frangula)
- all other species of thistles belonging in genera of Cirsium and Carduus
- Palmer amaranth (Amaranthus palmeria)
Secondary noxious weeds
- butterprint (Abutilon theophrasti) annual
- cocklebur (Xanthium commune) annual
- wild mustard (Brassica arvensis) annual
- wild carrot (Daucus carota) biennial
- buckhorn (Plantago lanceolata) perennial
- sheep sorrel (Rumex acetosella) perennial
- sour dock (Rumex crispus) perennial
- smooth dock (Rumex altissimus) perennial
- poison hemlock (Conium maculatum)
- multiflora rose (Rosa multiflora)
- wild sunflower (wild strain of Helianthus annus L.) annual
- puncture vine (Tribulus terrestris) annual
- teasel (Dipsacus) biennial
- shattercane (Sorghum bicolor) annual
For a full copy of the current Iowa Weed Law, please visit
Every county in Iowa has a weed commissioner to oversee that County’s noxious weed control program.
