Purple Loosestrife

(Lythrum salicaria)

Description

Plant stems are 2 - 7 feet in height. These fine-haired stems are stiff and 4-sided. Leaves are arranged oppositely on the stem, ususally in pars (sometimes 3). Flowers are bright purplish-pink on a spike closely attached to the stem.

Purple Loosestrife is an extremely agressive perennial wetland plant introduced from Europe. This exotic has become a serious threat to native, emergent North American vegetation in shallow marshes and along lake shore areas. Significant spread of the plant has been observed within the past 50 years, even into the sensitive habitats of endangered plant and animal species.

Prolific seed production (up to 300,000 seeds per plant stalk), effective seed dispersal and survival, plus an extensive root system, makes it quite competitive. Unfortunately, it has been intentionally introduced in some areas as an ornamental plant for the display of its colorful flowers.

These plants are of very little value to wildlife as food or nesting habitat. Their takeover will eliminate the diverse plant and animal populations required within a stable community.

Some states have taken action to prohibit the sale and distribution of theses plants. Early eradication of the plant when it is first spotted is the only effective means of preventing its spread.

Suggested Treatments

Use restrictions of treated water with Rodeo