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What is a Weed?
Dispersion of Weeds
Lists of Weedy Wildflowers:
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Barren Ground
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hilty@shout.net
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Copyright © 2003-2009
by John Hilty
All rights reserved.
Last Updated: 1-5-09
Abutilon theophrastii (Velvetleaf)
Acalypha ostryaefolia (Hornbeam Mercury)
Acalypha rhomboidea (Rhomboid Mercury)
Achillea millefolium (Yarrow)
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)
Arabidopsis thaliana (Mouse-Eared Cress)
Arctium minus (Common Burdock)
Arenaria serpyllifolia (Thyme-Leaved Sandwort)
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)
Berberis thunbergii (Japanese Barberry)
Bidens bipinnata (Spanish Needles)
Brassica juncea (Indian Mustard)
Brassica nigra (Black 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)
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 pumilum (Small Mouse-Eared Chickweed)
Chaenorrhinum minus (Dwarf Snapdragon)
Chamaesyce maculata (Prostrate Spurge)
Chamaesyce nutans (Nodding Spurge)
Chelidonium majus (Greater Celandine)
Chenopodium album (Lamb's Quarters)
Chenopodium ambrosioides (Mexican Tea)
Chorispora tenella (Blue Mustard)
Cichorium intybus (Common Chicory)
Cirsium arvense (Canada Thistle)
Cirsium vulgare (Bull Thistle)
Clematis ternifolia (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)
Datura stramonium (Jimsonweed)
Datura wrightii (Angel's Trumpet)
Daucus carota (Wild Carrot)
Descurainia pinnata brachycarpa (Tansy Mustard)
Descurainia sophia (Flixweed)
Dianthus armeria (Deptford Pink)
Dipsacus fullonum (Teasel)
Dipsacus laciniatus (Cut-Leaved Teasel)
Duchesnea indica (Mock Strawberry)
Eclipta prostrata (Yerba de Tajo)
Elaeagnus umbellata (Autumn Olive)
Erechtites hieracifolia (Pilewort)
Erigeron annuus (Annual Fleabane)
Eriophila verna (Early Whitlow Grass)
Erodium cicutarium (Storksbill)
Erysimum repandum (Treacle Mustard)
Euphorbia cyparissias (Cypress Spurge)
Euphorbia marginata (Snow-on-the-Mountain)
Fagopyrum esculentum (Common Buckwheat)
Fallopia convolvulus (Black Bindweed)
Galinsoga quadriradiata (Peruvian Daisy)
Galium aparine (Cleavers)
Galium mollugo (Hedge Bedstraw)
Geranium carolinianum (Carolina Cranesbill)
Glechoma hederacea (Ground Ivy)
Hemerocallis fulva (Orange Day Lily)
Hesperis matronalis (Dame's Rocket)
Hibiscus trionis (Flower-of-an-Hour)
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)
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)
Lepedium virginicum (Common Peppergrass)
Lespedeza cuneata (Silky Bush Clover)
Leucanthemum vulgare (Ox-Eye Daisy)
Linaria repens (Creeping Toadflax)
Linaria vulgaris (Butter-and-Eggs)
Lonicera japonica (Japanese Honeysuckle)
Lonicera morrowii (Morrow Honeysuckle)
Lotus corniculata (Birdsfoot Trefoil)
Lunaria annua (Money Plant)
Lysimachia nummularia (Moneywort)
Lythrum salicaria (Purple Loosestrife)
Malva neglecta (Common 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)
Mollugo verticillatus (Carpetweed)
Monarda didyma (Bee Balm)
Myosotis stricta (Small-Flowered Forget-Me-Not)
Myosoton aquaticum (Water Chickweed)
Nepeta cataria (Catnip)
Nicandra physalodes (Shoofly Plant)
Nigella damascena (Love-in-a-Mist)
Oenanthe sarmentosa (Pacific Water Parsley)
Ornithogalum umbellatum (Star-of-Bethlehem)
Oxalis stricta (Yellow Wood Sorrel)
Pastinaca sativa (Wild Parsnip)
Perilla frutescens (Beefsteak Plant)
Persicaria cespitosa (Creeping Smartweed)
Persicaria hydropiper (Waterpepper)
Persicaria vulgaris (Lady's Thumb)
Phytolacca americana (Pokeweed)
Plantago lanceolata (English Plantain)
Plantago rugelii (Black-Seeded Plantain)
Plantago virginica (Dwarf Plantain)
Polanisa dodecandra dodecandra (Clammyweed)
Polygonum arenastrum (Prostrate Knotweed)
Portulaca oleracea (Common Purslane)
Potentilla norvegica (Rough Cinquefoil)
Potentilla recta (Sulfur Cinquefoil)
Prunella vulgaris (Selfheal)
Pyrus calleryana (Callery Pear)
Ranunculus abortivus (Small-Flowered Buttercup)
Ranunculus repens (Creeping Buttercup)
Raphanus sativus (Garden Radish)
Reseda luteola (Weld)
Reynoutria japonica (Japanese Knotweed)
Rhamnus cathartica (Common Buckthorn)
Rorippa sylvestris (Creeping Yellow Cress)
Rosa multiflora (Multiflora Rose)
Rumex acetosella (Sheep Sorrel)
Rumex crispus (Curly Dock)
Rumex obtusifolius (Bitter Dock)
Sagina procumbens (Procumbent Pearlwort)
Saponaria officinalis (Soapwort)
Scilla siberica (Siberian Squill)
Senecio vulgaris (Common Groundsel)
Sibara virginica (Virginia Rock Cress)
Sida spinosa (Prickly Sida)
Silene arvensis (Evening Campion)
Silene vulgaris (Bladder Campion)
Sisymbrium altissimum (Tumble Mustard)
Sisymbrium officinale (Hedge Mustard)
Solanum dulcamara (Bittersweet)
Solanum ptycanthum (Black Nightshade)
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)
Synapis arvensis (Wild Mustard)
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 campestre (Low Hop Clover)
Trifolium hybridum (Alsike Clover)
Trifolium pratense (Red Clover)
Trifolium repens (White Clover)
Valerianella radiata (Beaked Corn Salad)
Verbascum blattaria (Moth Mullein)
Verbascum thapsus (Great Mullein)
Verbena bracteata (Prostrate Vervain)
Veronica arvensis (Corn Speedwell)
Vicia dasycarpa (Smooth Vetch)
Vicia villosa (Hairy Vetch)
Vinca minor (Lesser Periwinkle)
Viola bicolor (Field Pansy)
Xanthium strumarium canadense (Common Cocklebur)