Wild Violet Weed Information
Other Names: Wild Violet is also known as meadow violet and hooded blue violet.
Scientific Name: Viola papilionacea
Life Cycle: Broadleaf Perennial
How To Identify Wild Violet
Wild violets like shady spots that have fertile soil. There leaves tend to look cupped toward the flower. Because the leaves are waxy and cupped the wild violet is able to withstand herbicide by letting the herbicide just roll down and drop off the leaf. Wild violets have Blue/purplish flowers which show up in May.
How to Kill Wild Violet
Pre-emergent: No pre-emergent will work for Wild Violets because they are perennials.
Post Emergent: The applicators at Perfection Lawn and Pest Control have deemed the wild violet as the hardest weed to get out of lawns. We have tried many different herbicides including Trimec 992, Surge, Q4 Plus, etc. These have all have shown to cause injury of wild violets but have never gotten rid of the problem.
The Secret: We have found the best combination to spray on wild violets but you need 2 tanks or sprayers. In one sprayer, mix the herbicide T-zone at the recommended rate with a surfactant. In another sprayer mix Drive Xlr8 (Quinclorac) with MSO (Methlylated Seed Oil). First, spray the T-zone on the violets and wait 10-20 minutes to let is soak in. Then spray the Drive Xlr8. You should see results within a few days.
The reason this works is T-zone contains the active ingredient Triclopyr which is known to kill wild violets. However, this normally is not enough to wipe out the whole plant so the added Quinclorac will give the extra dose of lethalness to kill the wild violets once and for all. The surfactant that is added to both herbicides helps the herbicide stick to the leaves. As mentioned above, Violets have waxy leaves which cause the herbicide to roll of the leaves.
The best time to spray wild violets is either when it is flowering in May or early fall. Wild violets tend to grow aggressively and will tend to come back if you spray them in the summer. Many times it may look like you killed the wild violet, but they will come back if you don’t spray them multiple times.