Hello,

From the picture it appears that you have a case of ground Ivy (Glechoma hederacea) also known as Creeping Charlie. Ground ivy is a low-growing, creeping, invasive perennial. It spreads by seed and the vining stems (stolons) which root at their nodes.

Unfortunately, pulling and digging are often ineffective because rarely are all stem and root pieces removed using this method. If the ground ivy is not completely destroyed, surviving portions will continue to grow and spread. The most effective broadleaf herbicide products are those that contain one or more of the following compounds; 2,4-D, MCPP, dicamba, and triclopyr. The most effective herbicides to use are triclopyr and 2,4-D. As always when using pesticides, carefully read and follow label directions.

Populations of ground ivy vary in their susceptibility to broadleaf herbicides. For example, one population of ground ivy may be highly sensitive to 2,4-D, while another population may be somewhat tolerant to 2,4-D. Since ground ivy populations vary in their susceptibility to broadleaf herbicides, it is important to alternate herbicides with different active ingredients or select products with more than one of the effective active ingredients when attempting to control ground ivy.

Once the ground ivy has been effectively controlled, try to follow sound cultural practices to promote a healthy lawn. A good nitrogen fertility program along with the use of herbicides will help. Apply 3 to 4 pounds of nitrogen per 1,000 square feet per year. Nitrogen improves the vigor and competitiveness of Kentucky bluegrass, slowing the spread of ground ivy. An excellent fertilizer program for Kentucky bluegrass lawns consists of applications of 1 pound of nitrogen per 1,000 square feet in late April/May, September, and late October/early November.

Proper mowing, fertilization, and other good management practices should help establish a thick, healthy lawn. A dense stand of grass should help discourage future invasions of this aggressive weed.

One other thought. Creeping Charlie thrives in damp shady area. If this is the case with your lawn, perhaps having the lawn aerated will assist with any drainage issues, thus further helping your lawn outcompete the ground ivy.

Here are a few links that may prove helpful:

Ground Ivy Control for Home Lawns (E0006TURF) - MSU Extension

Controlling Creeping Charlie, Gleochoma hederaceae – Wisconsin Horticulture

David,

You are very welcome.