Tag Archive | "Broadleaf Weeds"

Control Broadleaf Weeds


A well maintained lawn is an integral part of an attractive home landscape. Unfortunately, dandelion, plantain, and other perennial broadleaf weeds can become problems. When broadleaf weeds invade lawns, mechanical and chemical measures can be undertaken to remove or destroy the weeds.

In small areas, some weeds can be controlled by pulling and digging. This method is best accomplished after a good rain or deep watering. Unfortunately, pulling and digging is often ineffective on deep-rooted weeds.

In many situations, herbicides are the only practical method of weed control. Effective broadleaf herbicides include 2,4-D, MCPP, MCPA, dicamba, and triclopyr. The most effective broadleaf herbicide products contain a mixture of 2 or 3 of these herbicides as no single compound will control all broadleaf weeds.

Fall (mid-September through October) is the best time to control perennial broadleaf weeds in the lawn with broadleaf herbicides. In fall, perennial broadleaf weeds are transporting food (carbohydrates) from their foliage to their roots in preparation for winter. Broadleaf herbicides applied in fall will be absorbed by the broadleaf weed’s foliage and transported to the roots along with the carbohydrates, resulting in the destruction of the broadleaf weeds.

Broadleaf herbicides are important tools in controlling weeds in the lawn. However, good cultural practices are also important. Proper mowing, fertilization, and other sound management practices should produce a thick, healthy lawn. A dense stand of grass provides few opportunities for unwanted weeds. Good cultural practices, along with an occasional application of a broadleaf herbicide, should effectively control most broadleaf weeds in the lawn.

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