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Weeds

As part of an IPM program it is important to scout for, and identify weeds, specifically during the Critical Weed-free Period, the short time when weed interference can cause large yield losses.

Choose an icon below for more information or browse the weed gallery.

Scouting for weeds

Critical weed-free period

Broadleaf morphology

Grass morphology

Weed Gallery

Broadleaf
Common chickweed	Common groundsel	Dwarf snapdragon	Field violet
Lady's thumb	Lamb's-quarters	Mallows	Mustards
Nightshades	Pigweed	Purslane	Ragweed
Spreading atriplex	Wild buckwheat
Grasses
Barnyard grass	Crab grass	Fall panicum	Foxtails
Long-spined sandbur	Quack grass	Wire-stemmed muhly
Perennials
Annual sow-thistle	Canada goldenrod	Canada thistle	Clammy Groundcherry
Common milkweed	Creeping Charlie	Dandelion	Dog strangling vine
Field bindweed	Field horsetail	Mouse-eared chickweed	Plantains
Poison ivy	Sheep sorrel	Toadflax	Tufted vetch
Virginia creeper	Wild grape	Wood-sorrel	Yellow nut sedge