Scarlet Pimpernel Control: Tips For Scarlet Pimpernel Weeds

Scarlet Pimpernel Control: Tips For Scarlet Pimpernel Weeds

By: Jackie Carroll
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The British sometimes refer to scarlet pimpernel as the poor man’s weather-glass because the flowers close when the sky is overcast, but there is nothing quaint about the plant’s invasive potential. Find out about scarlet pimpernel control in this article.

Identifying Scarlet Pimpernel

Scarlet pimpernel (Anagallis arvensis) is an annual weed that is quick to invade cultivated areas such as lawns, gardens and agricultural lands.

Scarlet pimpernel looks a lot like , with small, oval leaves growing opposite of each other plants that grow no more than one foot tall. The two main differences between the weeds are found in the stems and the flowers. The stems are round on chickweed plants and square on scarlet pimpernel. The one-quarter inch scarlet pimpernel flowers can be red, white, or even blue, but they are usually bright salmon in color. Each star-shaped flower has five petals.

The stems and foliage contain sap that can or cause a rash. When managing scarlet pimpernel by pulling up the plants, be sure to wear gloves to protect your hands. The plants are poisonous if eaten to both humans and animals. The leaves are quite bitter, so most animals tend to avoid them.

Managing Scarlet Pimpernel

There are no chemicals recommended for the control of scarlet pimpernel, so we have to rely on mechanical methods to keep the plants in check.

Since scarlet pimpernel weeds are , preventing the plants from flowering and producing seeds is the best method of preventing their spread. Frequent mowing and pulling before the buds open are good ways to keep the plants from going to seed.

works well on weeds growing in large areas. You can solarize the soil by laying clear plastic over the problem area. Use rocks or bricks to hold the sides of the plastic tight against the ground. The sun’s rays heat the soil beneath the plastic, and the trapped heat kills any plants, seeds and bulbs in the top six inches of soil. The plastic has to remain tightly in place for at least six weeks to completely kill the weeds.

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