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Content tagged with "invasive species"

Photo of common reed plants in large colony

Common Reed

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.

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Photo of common reed plants in large colony

Common Reed (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.

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Photo of common reed showing purplish flowers

Common Reed (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.

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Photo of common reed, closeup of leaf collar

Common Reed (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.

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Photo of common reed, late-season mature plants

Common Reed (Mature Seedheads)

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.

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

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Photo of common teasel, blooming flowerhead, showing lavender flowers.

Common Teasel (Flowerhead)

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.

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Photo of common teasel flowering heads.

Common Teasel (Flowerheads)

“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.

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Photo of common teasel showing opposite, unlobed leaves.

Common Teasel (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.

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Spotted Knapweed Flower

Controlling the scourge of invasive spotted knapweed

This content is archived
Invasive species, such as spotted knapweed, are a top threat to Missouri’s native plants and animals.

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