9/4/2023 0 Comments Mold on bee balm plant![]() P.S. If you love the content I create for Shifting Roots, consider joining our community on Patreon. If you liked this blog post, follow me on Facebook, TikTok, and Instagram for more cold-climate gardening tips, delicious recipes, and cut flower goodness! I also make weekly videos over on my YouTube channel. Have you fought and won the battle with powdery mildew? RELATED: HOW TO FIX BLOSSOM END ROT IN TWO WEEKS The plant will be delayed, but you might be able to totally avoid a further outbreak. If it’s earlier in the growing season and no vegetables or fruit have been set, you might try removing all infected leaves immediately. You still need enough leaves for photosynthesis to occur. Is the outbreak on your vegetables? In that case, only remove the leaves that are badly infected, and apply the milk mixture to the remaining infected leaves at least once a week. If you notice a problem year after year, you may want to choose a different variety next year. If powdery mildew is infecting a flower or perennial that has finished blooming, the best course of action is to pull it out (if it’s annual) or cut off all the leaves (if it’s a perennial). Related: How to Survive a Heat Wave and How to Take Care of Your Garden on Vacation A Few More Things to Consider I personally mix 1 cup of powdered milk in my watering can and water the remaining infected leaves. Spray remaining leaves with a solution of 1 part milk to 9 parts water.Cut off badly infected leaves and dispose of them in the garbage, not the compost.If you’re like me, you may have had good intentions about doing so, but then let it get out of hand, like in the picture below. In a perfect world, you would cut off and discard any leaves that show powdery mildew as soon as you saw the first signs of an outbreak. The Two-Step Process to Controlling a Powdery Mildew Outbreak If you’re experiencing the fungus on a perennial year after year, you might consider pulling it out and replacing it with a more disease-resistant variety next year. ![]() Some species of plants are more susceptible to powdery mildew than others. Hot moist conditions, combined with poor airflow from spacing plants too close together in the garden are a breeding ground for an outbreak of powdery mildew. Like video better than reading a blog post? Watch this Facebook Live I recorded about a powdery mildew outbreak in my garden: Thankfully, it will not permanently damage your plant, but it will slow down or cease any fruit or vegetable production. It spreads by spores, and once you’ve got it, it’s almost impossible to get rid of for the season. Powdery mildew diseases are caused by not one, but many different species of fungi. ![]() Powdery mildew is a fungal disease that affects a wide range of plants, including apples, pears, flowers, squash, zucchini, pumpkins, and cucumbers. While you can’t reverse it, in this blog post, I’ll show you a simple two-step process to keep it from spreading further. You, my friend, have an outbreak of powdery mildew. ![]() You shrug it off, thinking it’s probably no big deal.Ī few days later it’s spread to more and more leaves, and those few innocent white dots have overtaken more and more leaves in a white, powdery mess of horror. ![]() Your garden is doing well and you’re even starting to harvest some vegetables when all of a sudden you see some weird little white spots on your pumpkins, squash, cucumbers, or zucchini. ![]()
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