With that being said, spraying the plants once will not do the trick. Treat the Wild Onion in November and reapply in March when Spring is in bloom. Both plants grow from underground bulbs. Timing of Sprays: Treat wild garlic and wild onion in November and again in March. You also may need to repeat this process for t… If the clusters of thin leaves that grow to about a foot tall aren’t enough to help you ID this interloper, the strong onion smell that wafts up when the plant is cut or mowed is a dead giveaway. Wild onions (Allium canadense) are relatives to the varieties of garlic and onions we buy from the grocery store but with a glaring difference; these winter perennials creep up usually where they are not wanted in flower beds or lawns. And their underground bulb—like that of a cultivated onion or garlic—stores a lot of energy for future rejuvenation. Continue reading to learn more about Wild Onion and how you can remove it from you property using professional lawn care products and advice by Solutions Pest & Lawn lawn care experts. Though similar in appearance to wild garlic, wild onion has flat, solid leaves, while the leaves of wild garlic are round and hollow. 2,4-D Amine Selective Post-Emergent Herbicide. After you have confirmed that you are dealing with Wild Onion, you should move on to Inspection to pinpoint the areas where the weed is growing and the conditions that is helping Wild Onion to thrive. Some have noticed in their area that wild garlic seems to have an onion smell, while wild onion has more of a garlic smell. To combat a thin lawn, you may need to overseed it to start it on the road to thickness, then keep it thick with regular feedings (4 times per year) of lawn food. Garlic and onion may make great additions in the kitchen if you’re cooking some Italian food, but on your lawn? Attack persistently. Google+. 2,4-D Amine should be mixed with a gallon of water at the rate of 0.75 to 1 fl. in 2 gallons of water. Our top recommendation is 2,4-D Amine Selective Weed Killer. These 'onions' and 'garlic's—wild members of the Allium family—are tall and slender, and thus shed herbicides very effectively. These are the most commonly used herbicides. Treat the Wild Onion in the early fall to November with a follow-up treatment near the end of winter into early spring (February or early March). Inspect the lawn again in the spring and the next fall, and treat if necessary. Answer: Dismiss South is labeled to be used on Centipedegrass but it is not labeled to treat wild onion and wild garlic and several other broadleaf weeds. While you may welcome garden-grown onions to your kitchen, that doesn’t mean you want their wild cousins hanging out on your lawn. However, be careful not to apply most weed killers onto centipedegrass or St. Augustinegrass during their spring green-up period. The bulbs of wild garlic have a papery outer covering and form reproductive bulblets that can be spread with tillage and are capable of remaining dormant for 1 to 5 years. /en-us/library/specific-weeds/what-wild-onion-and-how-do-i-control-it, https://www.roundup.com/sites/g/files/oydgjc121/files/styles/large/public/asset_images/t7501_320x180.jpg?itok=JxOIOIAW. Controlling wild garlic can be accomplished by hoeing during the winter and early spring to prevent new bulbs from forming. Wild Onion is often mistaken for Wild Garlic (and vice versa). *Consumer Guarantee: If for any reason you are not satisfied after using this product, simply send us original proof of purchase, and we will refund the purchase price. You must have JavaScript enabled in your browser to utilize the functionality of this website. Even if you do manage to pull up the main plant, chances are there will be small bulbs left behind in the soil that will be more than happy to grow and continue to plague you. 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