How to Kill Common Blue Violet Weeds in the Yard
- 1). Dig violets by hand, if you have only a few. Make sure you get all parts of each plant, including roots and rhizomes, because violets are tenacious weeds.
- 2). Apply a post-emergent herbicide such as dicamba or triclopyr to the violets in the fall as the plants are beginning to go dormant. Check the label on your chosen product to ensure that it contains a spreader-sticker, a chemical that will hold the product on the violet's leaves so the herbicide can be better absorbed. Reapply the herbicide approximately two weeks later.
- 3). Maintain a lush lawn in future growing seasons. Fertilize, water and trim your grass regularly to encourage healthy growth. Growing a thick lawn will make it more difficult for violets to get a foothold.
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