Common Iowa Weeds

Common weeds in lawns, fields, roadsides, etc. Development of this guide is still in progress.

Red Clover 1
Trifolium pratense
white clover 2
Trifolium repens
Black Medick 3
Medicago lupulina
White Sweetclover 4
Melilotus albus
Yellow Sweetclover 5
Melilotus officinalis
purple crownvetch 6
Securigera varia
bird's-foot trefoil 7
Lotus corniculatus
Common Purslane 8
Portulaca oleracea
low smartweed 9
Persicaria longiseta
Prostrate Knotweed 10
Polygonum aviculare
curled dock 11
Rumex crispus
common chickweed 12
Stellaria media
American pokeweed 13
Phytolacca americana
Common Lambsquarters 14
Chenopodium album
Redroot Amaranth 15
Amaranthus retroflexus
green carpetweed 16
Mollugo verticillata
creeping thistle 17
Cirsium arvense
lesser burdock 18
Arctium minus
chicory 19
Cichorium intybus
common dandelion 20
Taraxacum officinale
prickly sowthistle 21
Sonchus asper
prickly lettuce 22
Lactuca serriola
common mugwort 23
Artemisia vulgaris
pineapple-weed 24
Matricaria discoidea
hairy white oldfield aster 25
Symphyotrichum pilosum
horseweed 26
Erigeron canadensis
Common ragweed 27
Ambrosia artemisiifolia
giant ragweed 28
Ambrosia trifida
great mullein 29
Verbascum thapsus
ground-ivy 30
Glechoma hederacea
corn speedwell 31
Veronica arvensis
greater plantain 32
Plantago major
ribwort plantain 33
Plantago lanceolata
bittersweet nightshade 34
Solanum dulcamara
Carolina horsenettle 35
Solanum carolinense
field bindweed 1
Convolvulus arvensis
wild carrot 36
Daucus carota
poison hemlock 37
Conium maculatum
wild parsnip 38
Pastinaca sativa
velvetleaf 39
Abutilon theophrasti
dwarf mallow 40
Malva neglecta
common copperleaf 41
Acalypha rhomboidea
Spotted spurge 42
Euphorbia maculata
Yellow Woodsorrel 43
Oxalis stricta
garlic mustard 44
Alliaria petiolata
Field penny-cress 45
Thlaspi arvense
shepherd's-purse 46
Capsella bursa-pastoris
Virginia pepperweed 47
Lepidium virginicum
bitter wintercress 48
Barbarea vulgaris
Dame's rocket 49
Hesperis matronalis
yellow nutsedge 50
Cyperus esculentus
Hairy Crabgrass 51
Digitaria sanguinalis
yellow foxtail 52
Setaria pumila
Annual Meadow-grass 53
Poa annua
Smooth Brome 54
Bromus inermis
Quack Grass 55
Elymus repens
Asiatic dayflower 56
Commelina communis

Edited by Isaac Winkler, some rights reserved (CC BY-SA)

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