This method is best accomplished after a heavy 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 and dicamba. The most effective broadleaf herbicide products contain a mixture of two or all three of these compounds.
Combination products control a wider range of broadleaf weeds than a single compound.
For example, 2,4-D does an excellent job on controlling dandelions, but is relatively ineffective against white clover. MCPP, on the other hand, provides excellent control of white clover and only fair control of dandelions. Products containing 2,4-D and MCPP effectively control dandelions and white clover. Triclopyr is another broadleaf herbicide. In fall, perennial broadleaf weeds are actively translocating carbohydrates to their roots.