Weedy Wildflowers of Illinois


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What is a Weed?

Dispersion of Weeds

Lists of Weedy Wildflowers
:

Lawns


Gardens

Fields


Fence Rows

Railroads

Roadsides

Paved Areas

Meadows

Woodlands


Wetlands

Barren Ground

Other Information:

References

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Send questions or comments to John Hilty at the following
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john@illinoiswildflowers.info


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Copyright 2003-2014
by John Hilty
All rights reserved.


Last Updated: 8-19-14



Abutilon theophrastii (Velvetleaf)

Acalypha ostryifolia (Hornbeam Mercury)

Acalypha rhomboidea (Rhomboid Mercury)


Acalypha virginica (Virginia Mercury)

Achillea millefolium (Yarrow)

Aegopodium podagraria (Goutweed)

Ajuga reptans (Carpet Bugle)

Alcea rosea (Hollyhock)

Alliaria petiolata (Garlic Mustard)


Allium schoenoprasum (Chives)

Allium tuberosum (Garlic Chives)


Allium vineale (Field Garlic)


Amaranthus albus (White Amaranth)

Amaranthus blitoides (Prostrate Pigweed)

Amaranthus hybridus (Slender Pigweed - Green Form)

Amaranthus hybridus (Slender Pigweed - Red Form)

Amaranthus retroflexus (Rough Pigweed)

Amaranthus rudis (Water Hemp)

Ambrosia artemisiifolia (Common Ragweed)

Ambrosia trifida (Giant Ragweed)

Anthemis arvensis (Field Chamomile)

Anthemis tinctoria (Yellow Chamomile)

Arabidopsis thaliana (Mouse-Eared Cress)

Arctium minus (Common Burdock)


Arenaria serpyllifolia (Thyme-Leaved Sandwort)

Armoracia rusticana (Horseradish)

Artemisia annua (Annual Wormwood)

Artemisia vulgaris (Mugwort)

Asclepias syriaca (Common Milkweed)


Asparagus officinalis (Wild Asparagus)

Aster pilosus (Frost Aster)


Atriplex patula (Common Orach)

Barbarea vulgaris arcuata (Yellow Rocket)

Belamcanda chinensis (Blackberry Lily)

Bidens bipinnata (Spanish Needles)

Borago officinalis (Borage)

Brassica nigra (Black Mustard)

Brassica rapa (Rape Mustard)

Buglossoides arvense (Corn Gromwell)


Campanula rapunculoides (Creeping Bellflower)

Cannabis sativa (Hemp)

Capsella bursa-pastoris (Shepherd's Purse)

Cardamine hirsuta (Hairy Bitter Cress)

Cardamine parviflora arenicola (Small-Flowered Bitter Cress)

Carduus nutans (Nodding Thistle)

Carthamus tinctorius (Safflower)

Centaurea biebersteinii (Spotted Knapweed)

Centaurium pulchellum (Branching Centaury)

Cerastium dubium (Three-Styled Chickweed)

Cerastium fontanum (Common Mouse-Eared Chickweed)

Cerastium glomeratum (Glomerate Mouse-Eared Chickweed)

Cerastium nutans (Nodding Chickweed)

Cerastium pumilum (Small Mouse-Eared Chickweed)

Chaenorrhinum minus (Dwarf Snapdragon)

Chaiturus marrubiastrum (False Motherwort)

Chamaesyce maculata (Prostrate Spurge)

Chamaesyce nutans (Nodding Spurge)

Chamaesyce prostrata (Green Creeping Spurge)

Chelidonium majus (Greater Celandine)

Chenopodium album (Lamb's Quarters)


Chenopodium ambrosioides (Mexican Tea)

Chenopodium glaucum (Oak-leaved Goosefoot)

Chenopodium pratericola (Narrow-Leaved Goosefoot)

Chorispora tenella (Blue Mustard)

Cichorium intybus (Common Chicory)

Cirsium arvense (Canada Thistle)

Cirsium vulgare (Bull Thistle)


Clematis terniflora (Autumn Clematis)

Cleome hassleriana (Spider Flower)

Commelina communis (Asiatic Dayflower)


Conium maculatum (Poison Hemlock)

Consolida ajacis (Rocket Larkspur)

Convallaria majalis (Lily-of-the-Valley)

Convolvulus arvensis (Field Bindweed)

Conyza canadensis (Horseweed)


Conyza ramosissima (Dwarf Fleabane)

Coronilla varia (Crown Vetch)

Cosmos bipinnatus (Common Cosmos)

Cyclospermum leptophyllum (Fir-leaved Celery)

Datura stramonium (Jimsonweed)

Datura wrightii (Angel's Trumpet)

Daucus carota (Wild Carrot)


Descurainia pinnata brachycarpa (Tansy Mustard)

Descurainia sophia (Flixweed)

Dianthus armeria (Deptford Pink)

Digitalis lanata (Grecian Foxglove)

Dipsacus fullonum (Teasel)

Dipsacus laciniatus (Cut-Leaved Teasel)

Duchesnea indica (Mock Strawberry)


Eclipta prostrata (Yerba de Tajo)

Eichhornia crassipes (Water Hyacinth)

Erechtites hieracifolia (Pilewort)

Erigeron annuus (Annual Fleabane)


Erodium cicutarium (Storksbill)

Erophila verna (Early Whitlow Grass)

Eruca vesicaria sativa (Garden Rocket)

Erysimum cheiranthoides (Wormseed Mustard)

Erysimum repandum (Treacle Mustard)

Euphorbia cyanthophora (Wild Poinsettia)

Euphorbia cyparissias (Cypress Spurge)

Euphorbia marginata (Snow-on-the-Mountain)

Fagopyrum esculentum (Common Buckwheat)

Fallopia convolvulus (Black Bindweed)

Fragaria vesca vesca (European Woodland Strawberry)

Galinsoga quadriradiata (Peruvian Daisy)

Galium aparine (Cleavers)

Galium mollugo (Hedge Bedstraw)

Gaura parviflora (Small-Flowered Gaura)

Geranium carolinianum (Carolina Cranesbill)


Geranium sibiricum (Siberian Cranesbill)

Glechoma hederacea (Ground Ivy)

Hemerocallis fulva (Orange Day Lily)


Hesperis matronalis (Dame's Rocket)

Hibiscus trionum (Flower-of-an-Hour)

Hieracium caespitosum (Field Hawkweed)

Hieracium piloselloides (Glaucous King Devil)

Holosteum umbellatum (Jagged Chickweed)

Humulus japonicus (Japanese Hops)


Hypericum perforatum (Common St. John's Wort)

Hypochaeris radicata (Rough Cat's Ear)

Ipomoea hederacea (Ivy-Leaved Morning Glory)


Ipomoea purpurea (Common Morning Glory)

Iris pseudacorus (Yellow Iris)

Kochia scoparia (Kochia)

Kummerowia striata (Japanese Bush Clover)

Lactuca serriola (Prickly Lettuce)

Lamium amplexicaule (Henbit)

Lamium purpureum (Purple Dead Nettle)

Lapsana communis (Nipplewort)

Lathyrus hirsutus (Singletary Pea)


Lathyrus latifolius (Everlasting Pea)

Leonurus cardiaca (Motherwort)

Lepidium campestre (Field Peppergrass)

Lepidium densiflorum (Green-Flowered Peppergrass)

Lepidium virginicum (Common Peppergrass)


Lespedeza cuneata (Silky Bush Clover)

Leucanthemum vulgare (Ox-Eye Daisy)

Lilium lancifolium (Tiger Lily)

Linaria vulgaris (Butter-and-Eggs)

Linum perenne lewisii (Wild Blue Flax)

Lonicera japonica (Japanese Honeysuckle)

Lonicera sempervirens (Trumpet Honeysuckle)

Lotus corniculatus (Birdsfoot Trefoil)


Lunaria annua (Money Plant)

Lycopersicon esculentum (Tomato)

Lycopus europaeus (Gypsywort)

Lysimachia nummularia (Moneywort)


Lythrum salicaria (Purple Loosestrife)

Malva alcea (Vervain Mallow)

Malva neglecta (Common Mallow)

Malva sylvestris (High Mallow)

Matricaria discoidea (Pineapple Weed)

Matricaria recutita (German Chamomile)

Medicago lupulina (Black Medic)

Medicago sativa (Alfalfa)


Melilotus alba (White Sweet Clover)

Melilotus officinalis (Yellow Sweet Clover)

Melissa officinalis (Lemon Balm)

Mentha gentilis (Red Mint)

Mentha spicata (Spearmint)

Mollugo verticillata (Carpetweed)

Monarda citriodora (Lemon Bee Balm)

Monarda didyma (Bee Balm)

Myosotis scorpioides (True Forget-Me-Not)

Myosotis stricta (Small-Flowered Forget-Me-Not)

Myosoton aquaticum (Water Chickweed)

Myosurus minimus (Mousetail)

Nepeta cataria (Catnip)


Nicandra physalodes (Shoofly Plant)

Nigella damascena (Love-in-a-Mist)

Oenanthe javanica (Water Celery)

Ornithogalum umbellatum (Star-of-Bethlehem)

Oxalis corniculata (Creeping Wood Sorrel)

Oxalis fontana (Yellow Wood Sorrel)

Oxalis stricta (Yellow Wood Sorrel)


Pachysandra terminalis (Japanese Pachysandra)

Pastinaca sativa (Wild Parsnip)

Perilla frutescens (Beefsteak Plant)


Persicaria caespitosa (Creeping Smartweed)

Persicaria hydropiper (Waterpepper)

Persicaria vulgaris (Lady's Thumb)

Phytolacca americana (Pokeweed)

Plantago lanceolata (English Plantain)

Plantago major (Common Plantain)

Plantago rugelii (Black-Seeded Plantain)

Plantago virginica (Dwarf Plantain)


Polanisia dodecandra dodecandra (Clammyweed)

Polygonum arenastrum (Prostrate Knotweed)

Portulaca oleracea (Common Purslane)


Potentilla norvegica (Rough Cinquefoil)

Potentilla recta (Sulfur Cinquefoil)

Prunella vulgaris (Selfheal)

Ranunculus abortivus (Small-Flowered Buttercup)

Ranunculus ficaria (Lesser Celandine)

Ranunculus repens (Creeping Buttercup)

Ranunculus testiculatus (Bur Buttercup)

Raphanus sativus (Garden Radish)

Reseda luteola (Weld)

Reynoutria japonica (Japanese Knotweed)


Rorippa sylvestris (Creeping Yellow Cress)

Rosa multiflora (Multiflora Rose)

Rosa rugosa (Rugosa Rose)

Rumex acetosella (Sheep Sorrel)


Rumex crispus (Curly Dock)

Rumex obtusifolius (Bitter Dock)

Sagina procumbens (Procumbent Pearlwort)

Saponaria officinalis (Soapwort)

Scilla siberica (Siberian Squill)

Sedum sarmentosum (Whorled Stonecrop)

Senecio vulgaris (Common Groundsel)


Sibara virginica (Virginia Rock Cress)

Sida spinosa (Prickly Sida)

Silene pratensis (Evening Campion)

Silene vulgaris (Bladder Campion)


Sinapis arvensis (Wild Mustard)


Sisymbrium altissimum (Tumble Mustard)

Sisymbrium officinale (Hedge Mustard)

Solanum dulcamara (Bittersweet)

Solanum ptycanthum (Black Nightshade)

Solanum rostratum (Buffalo-Bur)

Sonchus arvensis glabrescens (Perennial Sowthistle)

Sonchus asper (Prickly Sowthistle)


Sonchus oleraceus (Common Sowthistle)

Stellaria graminea (Grass-Leaved Chickweed)

Stellaria media (Common Chickweed)

Stellaria pallida (Apetalous Chickweed)

Symphytum officinale (Common Comfrey)

Tanacetum vulgare crispum (Common Tansy)

Taraxacum officinale (Dandelion)


Thlaspi arvense (Field Pennycress)


Thlaspi perfoliatum (Perfoliate Pennycress)

Torilis arvensis (Common Hedge Parsley)

Tragopogon dubius (Western Goat's Beard)

Tragopogon pratensis (Yellow Goat's Beard)

Tribulus terrestris (Puncture Vine)

Trifolium arvense (Rabbit-Foot Clover)

Trifolium campestre (Low Hop Clover)

Trifolium hybridum (Alsike Clover)


Trifolium pratense (Red Clover)

Trifolium repens (White Clover)

Valeriana officinalis (Garden Valerian)

Valerianella radiata (Beaked Corn Salad)


Verbascum blattaria (Moth Mullein)

Verbascum thapsus (Great Mullein)

Verbena bonariensis (Purpletop Vervain)

Verbena bracteata (Prostrate Vervain)

Veronica arvensis (Corn Speedwell)

Veronica hederaefolia (Ivy-Leaved Speedwell)

Veronica persica (Bird's Eye Speedwell)

Veronica polita (Wayside Speedwell)


Veronica serpyllifolia (Thyme-Leaved Speedwell)

Vicia dasycarpa (Smooth Vetch)

Vicia sativa (Common Vetch)

Vicia villosa (Hairy Vetch)

Vinca minor (Lesser Periwinkle)

Viola tricolor (Johnny Jump-Up)

Xanthium strumarium canadense (Common Cocklebur)

Yucca smalliana (Yucca)