AGRON 330 Weed ID 3 Definitions
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Noxious Weeds
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16 Terms
Quackgrass
Category A
Ligule is membranous
Auricles are narrow and white
Diffuse knapweed
Category A
Deep lobed leaves, Rosette
White flower
Spotted knapweed
Category A
Deep lobed leaves, Rosette
Stems and leaves covered in short stiff hairs
Pink/purple flowers with black-tipped bracts
Russian knapweed
Category A
Stems and leaves covered in short stiff hairs
Pink/purple flower
Hoary cress
Category A
Stem leaves are clasping
Leaves covered in short white hairs
Leafy spurge
Category A
Leaves alternate and linear
Milky sap
Kudzu
Category A
Trifoliate leaves
Vining growth
Canada thistle
Category B
Spiny margins
Mature leaves crinkled
Flowers in small clusters
Cutleaf teasel
Category B
Stems and leaves have small prickle
Deeply lobed leaves
White flowers
Common Teasel
Category B
Stems and leaves have small prickles
Smoother edged leaves
Purple flowers
Johnsongrass
Category C
Visible midvein
Seedhead not compact, open panicle
Has rhizomes
Bur ragweed
Category C
Dusty white in color
Seeds in cone shape
Musk thistle
Category C
White mid-rib and margins
Solitary purple flower
Amur honeysuckle
Category C
Leaves are rounded at base and tapered to point
White cone shaped flowers
Opposite leaf arrangement
Woody shrub
Field bindweed
Category C
Cotyledons square
Leaves arrow shaped
Vining growth
Sericea lespedeza
Category C
Leaves trifoliate and alternate
Cotyledons oval