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Weed Science

Pictures of common weed seedlings of the Central Valley

(Some pictures taken in collaboration with University of California Cooperative Extension, Fresno County Farm Advisor Mr. Kurt Hembree) 

Barnyardgrass (Echinochloa crus-galli)

Bermudagrass (Cynodon dactylon)

Bindweed, field bindweed (Convolvulus arvensis)

Bluegrass, annual (Poa annua)

Chickweed, common (Stellaria media)

Clover, Spanish (Lotus purshianus)

Corn spurry (Spergula arvensis)

Crabgrass, large (Digitaria sanguinalis)

Cudweed, purple (Gnaphalium purpureum)

Fiddleneck, Coast (Amsinckia menziesii)

Filaree, redstem (Erodium cicutarium)

Filaree, whitestem (Erodium moschatum)

Fleabane, hairy (Conyza bonariensis)

Foxtail, yellow (Setaria glauca)

Groundcherry, lanceleaf (Physalis lancifolia)

Groundsel, common (Senecio vulgaris)

Henbit (Lamium amplexicaule)

Johnsongrass (Sorghum halepense)

Junglerice (Echinochloa colona)

Knotweed, common (Polygonum arenastrum)

Lambsquarters, common (Chenopodium album)

Lettuce, prickly (Lactuca serriola)

Mallow, little or Cheeseweed (Malva parviflora)

Marestail or Horseweed (Conyza canadensis)

Morningglory, annual (Ipomoea sp.)

Nettle, burning (Urtica urens)

Nightshade, black (Solanum nigrum)

Nutsedge, yellow (Cyperus esculentus)

Nutsedge, purple (Cyperus rotundus)

Panicle willowherb (Epilobium brachycarpum)

Plantain, narrow-leaved (Plantago lanceolata)

Prostrate pigweed (Amaranthus blitoides)

Puncturevine (Tribulus terrestris)

Shepherdspurse (Capsella bursa-pastoris)

Sowthistle, annual (Sonchus oleraceus)

Spurge, prostrate or spotted spurge (Chamaesyce maculata)

Swinecress, lesser (Coronopus didymus)

Thistle, Russian or Russian tumbleweed (Salsola iberica)

Yellow starthistle (Centaurea solstitialis)

Velvetleaf (Abutilon theophrasti)