Weed Library

- Broadleaf annual weed
- Active in the winter
- Controllable with pre- and post-emergents

This weed is common in the southeast. It appears when lawns are weak and thin. (Photo credit: Yahoo)

- Broadleaf perennial weed
- Active in the summer
- Controllable with post-emergents

This weed is hard to control and can be spread by humans, birds, animals, and wind.

- Broadleaf annual weed
- Active in the winter
- Controllable with pre- and post-emergents

Carolina geranium is found in the southeast in lawns, fields, and roadsides.

- Broadleaf annual weed
- Active in the summer
- Treated with post-emergents

Chamberbitter, also known as gripeweed, leafflower, or little mimosa, is found as far north as Illinois and as far west as Texas, but thrives in the southeast.

- Broadleaf perennial weed
- Active all year
- Controlled with post-emergents

Clover is highly palatable to livestock and is high in protein, phosphorus, and calcium.

- Broadleaf annual weed
- Active in the winter
- Controlled with pre- and post-emergents

Common chickweed loves a thin, weak turf and can remain viable in the soil for up to 30 years.

- Grassy annual weed
- Active in the summer
- Controlled with pre- and post-emergents

Crabgrass is one of the most common weeds and is quite invasive. It starts germinating early in the year and can survive all of the growing season. It looks very similar to regular turfgrass.

- Grassy perennial weed
- Active in the spring and summer
- Difficult to control

Dallisgrass spreads primarily by rhizomes (underground roots) or seeds. The underground growth makes it difficult to eradicate as the ground roots go deep and can be well established.

- Perennial weed
- Active all year
- Controlled with post-emergents

Dandelions can grow about anywhere, regardless of soil conditions but thrive in rich soil. Refrain from blowing the seeds of the white puff balls because these are the seeds and will spread the weed. Dandelions are edible, but be cautious of ingesting too many roots. (Photo credit: Deep Green)

- Broadleaf annual weed
- Active in the summer
- Very difficult to control, but multiple post-emergents treatments can do the job.

Doveweed can live in the soil for several years; eliminating it may take a couple of years of continuous control.

- Hairy annual weed
- Active in the winter but grows vigorously and becomes noticeable in the lawn when temperatures rise
- Controlled with pre- and post-emergents

Henbit is part of the mint family and produces pink to purple flowers. It can grow up to 30 centimeters tall.

- Sedges perennial weed
- Active in the spring and summer, but can be active in mild winters
- Controlled with post-emergents

Kyllinga is a non-native plant found in various parts of the world. It grows by rhizomes (underground stems) and is often mistaken for nutsedge.

- Broadleaf annual weed
- Active in the summer
- Mainly controlled with post-emergents

Lespedeza, also known as Japanese clover, is a common summer weed. It is a mat-forming weed that grows close to the ground and prefers thin turfgrass and dry, compacted areas.

- Broadleaf perennial weed (can act as a winter annual depending on climate conditions)
- Active in the winter
- Controlled with pre- and post-emergents

Mouse-ear chickweed forms dense, mat-like patches. Its fuzzy leaves and stems easily distinguish it. It is edible, tastes like spinach when cooked, and contains vitamins.

- Broadleaf perennial weed
- Active in the spring and summer
- Controlled with post-emergents

Nutsedge is an aggressive and persistent weed. It can be difficult to eradicate, and control is likely to be a long process. Successful nutsedge control involves both cultural and chemical management methods.

- Broadleaf perennial weed
- Active all year
- Mainly controlled with post-emergents

This weed looks like a small clover plant with yellow flowers. Some people use it as a groundcover, but most homeowners consider it a nuisance weed. Oxalis can be difficult to control because of its strong, deep roots.

- Grassy annual weed
- Active in the winter
- Controlled by pre and post - emergents

Poa annua, also known as annual bluegrass, is a clump-forming grass with a yellow-green color and whitish flower heads. It prefers moist, shady areas. It emerges fall through spring, flowers, and then dies when the weather warms. Poa annua can be difficult to control, as each plant produces several hundred seeds in a season that can lay dormant for years before sprouting.

- Broadleaf annual weed
- Active in winter
- Mainly controlled with pe- and post-emergents

Also called purple dead-nettle, red dead-nettle spreads like wildfire and is more difficult to control than any other annual weed. It is low-growing and blooms year-round, including in warm weather in winter. It prefers full sun to light shade and moist, rich soil.

- Broadleaf annual weed
- Active in the summer
- Mainly controlled with pre-emergents

Spurge is a large and diverse flowering plant genus that will grow in almost any open area. It grows in poor, compacted soil and prefers full sun. Spurge forms a dense mat of foliage extending from the central taproot up to two feet long.

- Broadleaf perennial weed
- Active all year but more prevalent in the spring and summer
- Not treatable with pre-emergents and difficult to control with post-emergents
Wild violets can grow anywhere from Florida to Canada and tolerate many different environments.