Content tagged with "invasive species"

Common Reed

Photo of common reed plants in large colony
Phragmites australis australis
Common reed is both native and exotic, but it’s the exotic subspecies that has become an invasive problem. Taking over wetlands with its dense stands, it changes the plant and animal communities and even the way the water flows. More

Common Reed (Colony)

Photo of common reed plants in large colony
Common reed is both native and exotic, but it’s the exotic subspecies that has become an invasive problem. Taking over wetlands with its dense stands, it changes the plant and animal communities and even the way the water flows. More

Common Reed (Flowers)

Photo of common reed showing purplish flowers
Common reed blooms in midsummer and has tawny, purplish flowers with long, silky hairs. The flowers occur in a large, plumelike panicle 6 to 20 inches long. More

Common Reed (Leaf Collar)

Photo of common reed, closeup of leaf collar
In common reed, the leaf collar, or ligule, a small outgrowth where the stem and leaf join, is a ring with dense, stiff hairs. More

Common Reed (Mature Seedheads)

Photo of common reed, late-season mature plants
Common reed occurs in disturbed or pristine wetlands, including shores of ponds and lakes, marshes, springs, riverbanks, roadsides, and ditches. It sets seed by late September. More

Common Reed Invasive Species Fact Sheet

Use this print-and-carry sheet to identify and control invasive reed canary grass on your Missouri Property. More

Common Teasel (Flowerhead)

Photo of common teasel, blooming flowerhead, showing lavender flowers.
Common teasel typically has lavender flowers, though occasionally a rare plant produces white flowers. It has been present in our state since before 1880 and is not as aggressive as cut-leaved teasel. More

Common Teasel (Flowerheads)

Photo of common teasel flowering heads.
“Infestation” is the term for what teasels are doing in Missouri. Learn to identify these thistlelike plants, and help to control the weedy spread of these tough, prickly invaders. More

Common Teasel (Leaves)

Photo of common teasel showing opposite, unlobed leaves.
The stem leaves of common teasel are not lobed, and though they are often fused at the base, they don’t form a cuplike structure around the stem. More

Controlling the scourge of invasive spotted knapweed

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Spotted Knapweed Flower
Invasive species, such as spotted knapweed, are a top threat to Missouri’s native plants and animals. More