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Powdery Mildew — Organic Gardening

Hi, I’m Tricia, a California organic
gardener it’s officially summer and I’m starting to see some really good results from all the work I’ve put in this spring and then uh oh! out pops the powdery mildew powdery mildew effects almost every type of plant, from roses and lawns, to forest trees and vineyards It is most prevalent in more Mediterranean
climates like California All it needs to grow is temperatures
between sixty five and eighty degrees and high relative humidity the first line of defense is a healthy
plant I’m going to give my plants some compost tea to help them stay healthy The second line of defense is to plant
varieties that are resistant to powdery mildew like these contender beans or the
sumpter cucumber avoid planting in too much shade and don’t overcrowd your plants that’ll really contribute to powdery mildew sometimes resistant varieties do not exist
or they don’t fit your needs for example, grape vines are
often effected by powdery mildew my grape vines are at risk of getting powdery mildew if they don’t get their summer pruning soon the summer pruning will increase airflow
and help prevent the mildew there are a variety of organic fungicides and oils that can help prevent or treat powdery mildew for example, sulfurs are an
inexpensive and effective way to control the disease They need to be sprayed before
symptoms of powdery mildew appear be sure and read the label really carefully because sulfurs can actually harm some plants for example, apricots Serenade is a biological
fungicide that will treat powdery mildew Serenade contains a bacteria that
attacks the powdery mildew fungus oils are another great option to control
powdery mildew because most of them will eradicate it and prevent it from happening neem oil and other horticultural oils are good non-toxic choices read the labels carefully though, generally
speaking oils shouldn’t be sprayed for at least 2 weeks after sulfur applications I hope you never have to deal with powdery mildew but if you’re concerned that you might have
it on some of your plants these pest ID cards are great because it’ll help you ID powdery mildew as well as other diseases so thanks for joining and Grow Organic for Life


  1. Max imm Author

    Really like your videos and products. Is their any chance you could do a video on some organic ways to control or eliminate late tomato blight.. I'm not sure if it's a problem in Ca. But it's a big problem in some parts of the north east. Thanks

  2. GrowOrganic Peaceful Valley Author

    Thank you for your feedback. We recommend the brands we trust, the ones we use in our own gardens. Since we are a retailer of pest control products state regulations require that we only recommend products labeled for pest control. We encourage our customers to share home remedies with each other, like the remedy mentioned in the other comments on this video,

  3. GrowOrganic Peaceful Valley Author

    You are correct. Not all of the products are OMRI listed. If you are a certified organic farmer or seeking certification it's critical to check with your certifying agency to make sure the input is allowed.


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