Bermudagrass

Johnsongrass

Medusahead

Quackgrass

Field
Bindweed


Hoary Cress

Diffuse
Knapweed


Russian
Knapweed


Spotted
Knapweed


Squarrose
Knapweed


Purple Loosestrife

Perennial Pepperweed

Leafy Spurge

Yellow Starthsitle

Canada Thistle

Musk Thistle

Scotch Thistle

Dyer's Woad

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Dalmatian Toadflax
Linaria genistifolia
 
Rosette

Multiple stems may come from the base. Blue-green leaves line the stem in alternate fashion. Leaves are wedge shaped, have a thick waxy cuticle, and partially clasp the stem.
Adult

This perennial weed grows from two to nearly four feet tall.
Flower

Flowers are yellow and may have white highlights, and have long tails appearing similar to snap dragon flowers. Bloom is in late spring into summer.
Weed Infestation

Dalmatian toadflax was brought to the United States from Europe, probably for ornamental purposes. It prefers rangeland and roadside habitat with sandy soils. It is very aggressive and hard to control due to deep roots and a thick waxy leaf cuticle. It reproduces by seed and rootstock.
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Buffalobur

Common
Burdock


Camelthorn

Goatsrue

Jointed
Goatgrass


Poison
Hemlock


Black
Henbane


Houndstongue

Blue-Flowering
Lettuce


Western
Whorled
Milkweed


Silverleaf
Nightshade


Yellow
Nutsedge


Puncturevine

Russian-Olive

Saltcedar

St. Johnswort

Bull Thistle

Dalmatian Toadflax

Yellow
Toadflax


Velvetleaf