Although it has many beneficial uses, creeping charlie or ground ivy is most commonly viewed as a weed. Perhaps you’ve recently found yourself wondering how to kill or control it. Or perhaps your question is simply how to get rid of creeping charlie without using chemicals?
If this plant has taken over your yard or garden, you need to know what to do next. Since there are many different species that can be mistaken for creeping charlie, you’ll definitely want to make sure that you know what you’re dealing with before proceeding any further.
I’ve asked similar questions myself when faced with this pest before. If you’re dealing with a creeping charlie infestation, the tips that follow will help you eradicate this pesky purple flowered weed from your yard.
What is Creeping Charlie?
Creeping charlie (Glechoma hederacea) is also known as ground ivy, gill-over-ground, or cat’s foot, among other common names. It is a member of the mint family that might occasionally be seen as a garden perennial, particularly in its variegated form. After all, ground ivy is a fairly hardy plant and it grows well in areas where ordinary lawn grasses wouldn’t normally work.
This species has also been used medicinally in the past, which could be one of the main reasons that it was exported from its home in Europe to other countries. Creeping charlie is now seen in a lot of places throughout the world.
However, most people now consider this purple flowered plant to be a nuisance that’s determined to gobble up their lawn. Creeping charlie can be very hard to destroy since it spreads by runners as well as by seed. Once you pull it up, any pieces that are left behind will make new plants. As a result, it has been labeled an invasive weed in most of the United States.
Identifying Creeping Charlie
Creeping charlie has fuzzy, fan shaped leaves with scalloped edges. Clusters of small, orchid-like blue or purple flowers grow on its square stems. However, the plant’s height can vary a great deal based on its growing conditions. Ground ivy can get up to 1.6 feet tall in ideal circumstances but it can just as easily be under 2 inches in height. In fact, it’s usually viewed as a groundcover, which was one of its original purposes in being brought to America.
Creeping charlie has a decided preference for damp, wooded environments but doesn’t shy away from full sunlight either. It’s often seen on ailing lawns as yet another problem that gardeners need to fix before it gets out of hand. This plant likes nutrient-rich, moist soils in boron deficient areas. Creeping charlie also has a pronounced aroma.
Since one of its common appellations is ‘creeping jenny’, Glechoma hederacea may be mistaken for the plant that more commonly goes by that name (Lysimachia nummularia). The difference between them is pretty obvious since Lysimachia nummularia typically has round leaves and yellow flowers.
Creeping charlie can also be mistaken for common mallow (Malva neglecta). However, common mallow doesn’t spread by runners and it hasn’t got the characteristically strong spicy scent that creeping charlie does.
There are other plants that look like ground ivy. One of these is dichondra, a Texas native with smooth leaves. It too can be used as a lawn substitute and have a weedy nature. Creeping charlie may likewise mistaken for henbit (Lamium amplexicaule), which is an annual that grows during the winter.
How to Get Rid of Creeping Charlie
Taking immediate action is the best way to keep this purple flowered weed from getting out of hand. This video provides a brief look at how to get rid of creeping charlie. However, if you’re secretly looking up stuff online rather than actually working and want to keep it on the quiet side, feel free to read on for some extra tips on getting rid of ground ivy.
What You’ll Need
Some commercial broadleaf herbicides can be used to treat ground ivy. Products that contain dicamba are generally said to work fairly well if they’re used correctly. However, the effectiveness of other products tends to vary. So make sure that the product you plan on using can successfully be used to kill creeping charlie before you proceed any further.
You’ll want to read the instructions very carefully before you start applying whatever product you’ve chosen. While most of these products are appropriate for use on your lawn, they will certainly kill any tender vegetable or flower garden plants that they encounter. You’ll definitely need to be careful when spraying to avoid getting the herbicide either on yourself or on other garden plants. (Some recommended sprayers can be found here.)
Another thing to be aware of is that you can’t the same product for several years running or it might cease to work. Gardeners with really bad creeping charlie problems might even decide to spray their entire lawn with broad spectrum herbicides and start over from scratch. However, this drastic measure is only recommended by professionals if the lawn in question is more than half covered in this noxious weed.
Time Herbicide Use Correctly
Most herbicides should be used when the weather is around 70ºF (21ºC). You should apply your chosen product just after you’ve mowed the grass. You may want to avoid doing further yard work for a few days after that to give the stuff a chance to sink in. It’s then customary to wait about two weeks before applying the herbicide again. A final treatment about a month later might even be necessary.
It’s best to apply herbicide in the fall. During this time, the ground ivy roots are storing the nutrients that they’ll need to survive the winter so they absorb chemicals more effectively at such times than they otherwise would. This helps weaken and kill creeping charlie plants over the winter so they don’t return. Although ground ivy can be treated in the early spring and summer when it’s in bloom, additional treatments must be applied in order for the process to be successful. Even so, applying herbicides may only keep it at bay rather than kill it entirely.
Hand weeding can be an effective way to get rid of creeping charlie without chemicals. However, this process will only work if the plant hasn’t established a stronghold in your yard. You must keep pulling the ground ivy out for some time afterwards to make sure that you’ve gotten rid of all of it and that it’s gone for good. It’s also a good idea to take the added precaution of wearing gloves while doing so because some people are severely allergic to ground ivy. Do keep in mind that it’s easiest to weed just after a rainstorm or after your garden has been watered.
You can also make life less pleasant for old charlie by reducing the amount of shade in your yard and regularly mowing the grass to the recommended height. A lush lawn will provide you with some protection from this weed. Just make sure that you select a lawn grass that’s suitable for your area or you may have difficulty getting it to grow. You’ll also want to avoid over watering your grass, because this can encourage creeping charlie to pay you a visit. (About an inch is enough for most varieties.)
Another method of keeping ground ivy from taking over is to improve your yard’s soil quality and overall drainage. Keeping your garden neat and well-pruned is important for many reasons, primarily that it encourages airflow and will subsequently help reduce problems such as creeping charlie. Of course, mulching your flowerbeds can additionally help keep ground ivy out. It might even be a good idea to use shade plants as a filler in wooded or moist areas instead of attempting to have a lawn there. Growing desirable plants that flourish in damp, shady environments instead will leave little space for problematic weeds.
Before attempting to use borax as a weed killer, you should be aware that this method is generally discouraged by college agricultural departments. However, this treatment does appear on a variety of websites as an effective way to get rid of creeping charlie.
The process is to first dissolve 10 ounces of borax in 4 ounces of warm water. Then you should add 2.5 gallons of water to it and blend that together. Finally, the mixture should be sprayed on the affected area. You’ll need to apply the mixture during periods of dry weather in order to obtain the best results. Getting the amounts in this formula right is very important because otherwise the process could destroy your yard. You could easily end up with toxic soil and even more problems if you’re not careful.
You should also keep in mind that boron is hazardous to other plants and animals when it’s encountered in large quantities. It is certainly not good for other plants. Too much of it can cause them to grow slowly or turn yellow. Using borax may additionally make it hard for the lawn to regrow where the treatment was applied. It could even be bad for the environment over time. However, more research is needed before that theory can be accepted as a fact.
Using a large amount of nitrogen on your lawn can help eradicate this weed. Chelated iron is another effective treatment because it burns creeping charlie. The downside is that it must be applied over the entire lawn, unless you want random dark green patches all over your grass. Applying chelated iron can also be an expensive treatment method.
Other Uses of Creeping Charlie
The ancient Saxons once used creeping charlie as part of their beer brewing process. It was generally used to clarify the beverage and give it some flavor. This plant has also been used as substitute for rennet in the cheese making process. Various species of wild bees still feed upon ground ivy, making it useful in that regard.
In Traditional Medicine
The plant can be used to concoct a vitamin-rich tea that’s no doubt helpful for a variety of ailments. Creeping charlie was once used to treat minor problems such eye inflammations, common colds, headaches, and ringing ears. Another historical function of this plant was to clean the internal parts of the body. Ground ivy was used in this manner to cure kidney problems, urinary tract infections, and indigestion. Lung and respiratory problems, such as bronchitis, have also been treated with creeping charlie in the past. However, you should never use any plant for medicinal purposes without first consulting an accredited physician or herbalist.
As an Edible Green
This easy-to-grow plant was traditionally eaten cooked and in salads, which is no doubt because it’s has a pleasantly spicy flavor. It’s additionally said to be full of antioxidants and vitamin C.
Despite the fact that creeping charlie has been consumed for centuries, there still remains some scientific concern over its edibility. After all, the plant does contain the same harmful chemicals that are found in pennyroyal, which can damage the liver and induce abortions. However, these compounds are present in creeping charlie in much smaller amounts. No matter what ground ivy’s debatable effects are on human beings, the plant is clearly poisonous to cows and horses. It can even make house pets sick if they eat enough of it.
Understanding how to kill weeds, creeping charlie in particular, is a topic that affects anyone who takes pride in their yard’s appearance. After all, there is nothing worse than a weed that won’t go away no matter what you do. I hope that this tutorial on killing ground ivy has helped you tackle that problem with aplomb and move on to the next item on your to-do list. Of course, please feel free to add your own comments in the section provided below and don’t forget to share the article with your friends if you’ve enjoyed it.