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Powdery Mildew

Powdery mildew is a common disease on many types of plants and is prevalent under the diverse conditions found in many areas of California. Different powdery mildew fungi cause disease on different plants. These fungi tend to infect either plants in the same family or only one species of plant.
You can recognize this disease by the white, powdery mycelial and spore growth that forms on leaf surfaces and shoots and sometimes on flowers and fruits. Powdery mildews may infect new or old foliage. This disease can be serious on woody species such as rose, crape myrtle, and sycamore where it attacks new growth including buds, shoots, flowers, and leaves. New growth may be dwarfed, distorted, and covered with a white, powdery growth. Infected leaves generally die and drop from the plant earlier than healthy leaves.
Wind carries powdery mildew spores to new hosts. Although relative humidity requirements for germination vary, all powdery mildew species can germinate and infect in the absence of free water. In fact, water on plant surfaces for extended periods inhibits germination and kills the spores of most powdery mildew fungi. Moderate temperatures of 60° to 80°F and shady conditions generally are the most favorable for powdery mildew development. Powdery mildew spores and mycelium are sensitive to extreme heat and sunlight, and leaf temperatures above 95°F may kill the fungus.

15 Comments to Powdery Mildew:

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NinjaEssays on Tuesday, November 21, 2017 8:50 PM
This is the first time I heard about this disease and people should care about their plants. I think this disease can easily destroy the plants and you did not understand this condition. Thank you for this lovely information which is new for me.
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top essay writing on Friday, June 22, 2018 10:06 PM
Powdery mildew is very alarming because it destroys many kinds of plants. We should protect our plants because life will be so much harder to live without them. We get fresh air from the plant. Not to mention the beautiful flowers they produce and the fruits they bear that we could eat. Thanks for this awareness blog. I will make sure that the plants in our garden will be properly taken care of and safe from this fungus.

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Reply to comment on Sunday, July 15, 2018 7:09 PM
Powdery mildew is one of the most common diseases on plants. The Powdery mildew, based on its name, is a kind of fungus that lives and spreads on most of the plants. The Powdery mildew has a whitish color and it needs to have a humid weather in order to live. This kind of fungus can be easily treated. We just need to tear apart the portion of the plant that is affected by the mildew to stop it from spreading. And our plants should be regularly exposed to sunlight to avoid this kind of fungul diseases. on Monday, April 09, 2018 1:58 AM
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Reply to comment on Saturday, December 29, 2018 3:27 AM
Oh I see, I did not know before about Powdery mildew but great to visit this post.Being a botany student, it’s a great update for me which is enough to add in my knowledge.Thanks
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