field of soybeans with pigweed
U of A CES Weed Identification
Bitterweed [Helenium amarum]


Helenium amarum

Boneset [Eupatorium perfoliatum]


Eupatorium perfoliatum

Bracken Fern [Pteridium aquilinum]

Bracken Fern

Pteridium aquilinum

Brazilian Vervain [Verbena brasiliensis]

Brazilian Vervain

Verbena brasiliensis

Buttercup [Ranunculus sardous]


Ranunculus sardous

Cocklebur [Xanthium strumariun]


Xanthium strumariun

Common Ragweed [Ambrosia artemisiifolia]

Common Ragweed

Ambrosia artemisiifolia

Croton [Crotonopsis elliptica]


Crotonopsis elliptica

Curly Dock [Rumex crispus]

Curly Dock

Rumex crispus

Dogfennel [Eupatorium capillifolium]


Eupatorium capillifolium

Fiddle Leaf Dock [Rumex pulcher]

Fiddle Leaf Dock

Rumex pulcher

Giant Ragweed [Ambrosia trifida]

Giant Ragweed

Ambrosia trifida

Goldenrod [Solidago ]



Ground Cherry [Physalis mollis]

Ground Cherry

Physalis mollis

Hairy Phacelia [Phacelia hirsuta]

Hairy Phacelia

Phacelia hirsuta

Hedge Mustard [Sisymbrium officinale]

Hedge Mustard

Sisymbrium officinale

Hemp Dogbane [Apocynum cannabium]

Hemp Dogbane

Apocynum cannabium

Horseweed [Conyza canadensis]


Conyza canadensis

Indian Heliotrope [Heliotropium indicum]

Indian Heliotrope

Heliotropium indicum

Ironweed [Vernonia baldwinnii]


Vernonia baldwinnii

Jimson Weed [Datura stramonium]

Jimson Weed

Datura stramonium

Lanceleaf Ragweed [Ambrosia bidentata]

Lanceleaf Ragweed

Ambrosia bidentata

Marsh Elder [Iva annua]

Marsh Elder

Iva annua

Mayweed [Anthemis cotula]


Anthemis cotula

Milkweed [Asclepias syriaca]


Asclepias syriaca

Mullein [Verbascum thapsus]


Verbascum thapsus

Old Field Toadflax [Nuttallanthus canadensis]

Old Field Toadflax

Nuttallanthus canadensis

Perilla Mint [Perilla frutescens]

Perilla Mint

Perilla frutescens

Poison Hemlock [Conium maculatum]

Poison Hemlock

Conium maculatum

Pokeweed [Phytolaca americana]


Phytolaca americana

Poorjoe [Diodia teres]


Diodia teres

Prairie Tea [Croton monanthgynus]

Prairie Tea

Croton monanthgynus

Prickly Sida [Sida spinosa]

Prickly Sida

Sida spinosa

Rattlesnake Master [Eryngium yuccifolium]

Rattlesnake Master

Eryngium yuccifolium

Red Sorrel [Rumex acetosella]

Red Sorrel

Rumex acetosella

Sericea Lespedeza [Lespedeza cuneata]

Sericea Lespedeza

Lespedeza cuneata

Short Buttercup  [Ranunculus parviflorus]

Short Buttercup

Ranunculus parviflorus

Showy Crotalaria [Crotalaria spectabilis]

Showy Crotalaria

Crotalaria spectabilis

Small Flower Buttercup [Ranunculus abortivus]

Small Flower Buttercup

Ranunculus abortivus

Spiny Pigweed [Amaranthus spinosus]

Spiny Pigweed

Amaranthus spinosus

Stinkweed [Pluchea camphorata]


Pluchea camphorata

Swamp Buttercup [Ranunculus hispidus ]

Swamp Buttercup

Ranunculus hispidus

Tall Thoroughwort [Eupatorium altissimum]

Tall Thoroughwort

Eupatorium altissimum

Tickseed Sunflower [Bidens aristosa]

Tickseed Sunflower

Bidens aristosa

Tropic Croton [Croton glandulosus]

Tropic Croton

Croton glandulosus

Water Hemlock [Cicuta maculata]

Water Hemlock

Cicuta maculata

White Crown Beard [Verbesina virginica]

White Crown Beard

Verbesina virginica

White Vervain [Verbena urticifolia]

White Vervain

Verbena urticifolia

Wild Lettuce [Lactuca canadensis]

Wild Lettuce

Lactuca canadensis

Wild White Indigo [Baptisia leucantha]

Wild White Indigo

Baptisia leucantha

Woolly Croton [Croton capitatus]

Woolly Croton

Croton capitatus