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purple weed growing in yard

Purple weed growing in yard

The dove’s-foot crane’s-bill can be identified by their purple flowers with jagged petals. The leaves are rounded in shape, and are a bit hairy, consisting of around 5 to 7 leaf points. This weed may not prove to be a large problem to your lawn, because it prefers arid conditions and dry soil. Still, it is possible for this weed to spread regardless, so being vigilant is important.

While black nightshade can easily be confused for deadly nightshade, it isn’t as poisonous as its deadly cousins. This doesn’t necessarily mean that they are good for you either; black nightshade still carries toxicity. Every part of the plant can prove to be toxic, so it’s best not to ingest this weed. It’s still worth mentioning that people have used the plant medicinally, albeit to varying degrees of success. Despite this, we advise not to use any parts of this weed just in case something goes awry.

When these weeds go to seed, the flowers turn fluffy and white, much like dandelions. Canada thistles grow best in low fertility soil, so you have a better chance of eradicating them by increasing your soil’s fertility. This also has the added benefit of helping desired plants grow! As for getting rid of them, you should apply herbicide frequently to ensure that the extensive root system that keeps Canada thistles alive eventually dies.

These weeds do not typically take over your garden; they aren’t as common as other weeds on this list. Its name comes from the seeds that fall from the plant, which are adored by hens– and turtles too, interestingly! If you aren’t using the seeds, it’s a good idea to get rid of this weed as soon as possible. Applying herbicide in the early spring months should do the trick; by the time the flowers appear, it will be much harder to get rid of.

Dove’s-Foot Crane’s-Bill

It can be tempting to keep these weeds in your garden because of how attractive their flowers can be. Some of them can have medicinal and culinary uses, so they may be worth keeping around. More often than not though, you will want to get rid of these, lest they start taking over your garden!

Did you find some purple flowers in your yard or grass, and you aren’t able to identify if they are a weed or not? In this article, you’ll learn about the eleven most common weeds that carry purple flowers, to help you decide if these weeds need to be eradicated, or if they are safe to keep around your home.

The first of the thistles we will be featuring in this article is the Canada thistle, or the creeping thistle. Canada thistle is notorious for being difficult to get rid of. It is a perennial weed that has spear shaped leaves with sharp spines on them. The flowers are purple, coming in a pom pom shape that grows in clusters at the top of the plant.

Plant Species: Cirsium arvense

In this article, you’ll learn about eleven of the most common weeds with purple flowers. This way, you’ll be able to decide for yourself whether they are worth keeping or if they need to be eradicated. After all, it can be difficult to identify whether the plants you’re looking at are weeds or beneficial plants. By the end of the article, you will have learned about how these weeds present themselves, as well as any uses they may have. Let’s get ready to take a closer look!

This weed has purple flowers with two leaves beneath them. This plant does not grow very tall and as such can survive mowing. It’s important to get rid of it, as it can restrict your grass’s growth. Thankfully, selfheal can be easily controlled with herbicide, sometimes in a single application. It’s best applied in the autumn, or in the springtime when the flowers are in bloom.

Purple weed growing in yard

Growing a thick, healthy lawn is the first line of defense against these mint cousins, since the grass will easily out compete the weeds for nutrients and growing space. Consider planting a grass more compatible with the growing conditions if you’ve got a spot in the yard that’s plagued with these plants. Sometimes, the thick shade a tree casts or a low spot that catches water can make it difficult for the grass that lives on the rest of your flat, sunny lawn to grow – this is when you need a special grass blend. Check with your local nursery for grass seed better suited to these rough conditions.

Purple deadnettle (Lamium purpureum) is a common annual weed that belongs to the mint family, which explains why it’s such a pest. Like other mints, purple deadnettle is an aggressive grower that spreads like wildfire anywhere it can get a foothold. You’ll recognize it and its cousin, henbit, by their distinctive square stems that hold up an umbrella of tiny flowers and small pointed leaves reaching up to an inch long.

You don’t have to be a die-hard gardener to keep a great looking community of plans around your house. Many homeowners find a manicured and weed-free lawn to be just as pretty as any rose garden. When you’re maintaining a sea of grass, every plant that isn’t yours must be eradicated. Control of deadnettle is just one such task that turf keepers face year after year. It sounds tricky, but don’t fear! We’ve got some deadnettle weed management pointers to help you with this formidable foe.

Getting rid of deadnettle weeds is much more challenging than dealing with many other annual weeds because they tend to go to seed before mowing season even begins. Couple that with the thousands of seeds each plant can release persisting in the soil for years, and you’ve got one durable weed on your hands. One or two purple deadnettle weeds popping up in the lawn can easily be plucked by hand and disposed of as soon as they appear, but a larger population requires a more complicated solution.

What is Purple Deadnettle?

Post-emergence herbicides that contain metsulfuron or trifloxysulfuron-sodium can be used against purple deadnettle erupting in Bermuda grass or zoysia grass, but pre-emergence herbicides are much safer for other grasses. Be sure to apply pre-emergence herbicides in the late fall or early winter, before the purple deadnettle starts to germinate.

Deadnettle Control

Purple weed growing in yard

Key ID traits for henbit:

Purple deadneetle that was found in Van Buren County this spring (2016).
Photo taken by Nancy Carr

Key ID traits for purple deadnettle:

Henbit may look similar to purple deadnettle, but there are some key ID traits to look for to tell these weeds apart.

I’ve received a few questions asking what the purple weed is that is appearing in the landscape. It is probably either purple deadnettle (Lamium purpureum) or henbit (Lamium amplexicaule).
These weeds often get confused because they look similar. They both belong to the mint family, have square stems, have an ascending growth habit, opposite leaves, purple/pink flowers, and are winter annuals. When trying to identify if you have purple deadnettle or henbit, key ID traits to tell them apart are listed below.

Since both are winter annual, preventing seed production is key to management. Tillage and herbicides are effective management options for these weeds. Both species are flowering now and management with herbicides will not likely result in full control. Fall or early spring herbicide applications will be most effective at managing problem infestations. Contact your local Iowa State University Extension & Outreach field agronomist for resources regarding control of these weeds.
Another weed that belongs to the mint family and is making lawns appear purple right now is ground ivy (Creeping Charlie, Glechoma hederacea). Unlike henbit and purple deadnettle that are winter annuals, ground ivy is a perennial weed, and also generally stays confined to lawns.