Common Northern Illinois Weeds 2013-01-08T21:44:35+00:00

Common Northern Illinois Weeds

Below you will find images and descriptions of the top ten most common lawn weeds in Illinois.
Keeping these weeds out of your lawn will require regular, if not constant upkeep and treatments to your lawn.
CONTACT US to get professional lawn treatment or phone us at (630) 231-0007.

Common Northern Illinois Weeds

Dandelions

Dandelion

What to look for: Long, bright yellow blossoms followed by “puffball” seed carriers.
Structure: Leafless stems of varying lengths, grows from center of prostrate rosette.

Creeping Charlie

Creeping Charlie

What to look for: Creeping stems several feet long that root at nodes.
Structure: Creeping.

Clover

Clover

What to look for: 3 dark leaflets that develop white blossoms.
Structure: Low-growing, with creeping stems that root at nodes.

Thistle

Thistle

What to look for: Tall cluster of spiky stems, eventually bearing large purple flowers.
Structure: Bushy clump of spiky leaves.

Wild Violets

Wild Violets

What to look for: Small pansy-like flowers, blue violet to lilac or white.
Structure: Low-growing, with creeping stems that root at nodes.

Henbit

Henbit

What to look for: Hairy upper surfaces on leaves that develop pink to purple flowers.
Structure: Grows erect, up to 16″ tall.

Spurge

Spurge

What to look for: Numerous long, creeping stems tinged with purple which ooze milky fluid when broken.
Structure: Prostrate.

Crabgrass

Henbit

What to look for: Light green, flat leaves that point outward.
Structure: Forms a large clump or mat with stems branching out of a central star-shaped center hub.

Nutsedge

Nutsedge

What to look for: Shoots of grass with a V-shaped side profile of the leaves.
Structure: Shoots with leaves branching upward from central location.

Chickweed

Chickweed

What to look for: Broad oval pointed smooth leaves with star-shaped white blossoms.
Structure: Low growing.

Kentucky Tall Fescue

Kentucky Tall Fescue

What to look for: While not a “weed,” this bunching grass can look unfavorable next to Kentucky Bluegrass lawns.
Structure: Bunching grass with tall flat leaves.

Plantain (Plantago major)

Plantain (Plantago major)

What to look for: Rounded, oval-shaped leaves, 5–20 cm long and 4–9 cm broad. Produces seeds on a 13–15 cm tall stem.
Structure: Low growing and spreading outward from the center.

Wood Sorrel

Wood Sorrell

What to look for: 3 heart-shaped leaflets attached to the tip of a long stem. Leaves are green to purple and often close and fold downward.
Structure: Low growing.

Spotted Spurge

Spotted Spurge

What to look for: Dense creeping stems which ooze milky fluid when broken. Leaves often have a maroon spot on the upper leaf surface.
Structure: Prostrate.

Prostrate Knotweed

Prostrate Knotweed

What to look for: Numerous slender, wiry stems that are highly branched and form mats. Small white to green flowers with pinkish margins.
Structure: Prostrate.

Purslane

Purslane

What to look for: Red stems have small green paddle shaped fleshy leaves. Flowers are star-shaped and yellow.
Structure: Low growing.

Foxtail

Foxtail

What to look for: Wide leaf blades with stems bearing three to ten inch long spikes of flowers.
Structure: Grows erect, up to 10″ tall.

Quackgrass

Quackgrass

What to look for: A cool-season perennial grass that actively spreads by rhizomes (an intricate mass of roots). Broad, tapered blades with clasping auricles.
Structure: Grows erect, up to 3.5 feet tall.

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