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WPM and Possible Nitrogen Deficiency
Bubbie420started grow question 4 years ago
Guys, what can I do about this WPM that keeps coming back? It seems neem oil doesn't work against it but I'm going to try a stronger dose next spray. And could a plant at this stage be this hungry? I thought 3g of megacrop was a decent amount of nutrients for this stage.
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Leaves. White powder
Leaves. Color - Yellow
Feeding. Deficiences
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Nor_Cal_Kannablissanswered grow question 4 years ago
There are quite a few products and homemade concoctions people use to treat WPM. Among the effective treatments are:
Milk (1:9 ratio of milk to water)
Baking soda (2 tablespoons per gallon of water)
Neem Oil (4 teaspoons per gallon of water)
Hydrogen Peroxide (1 teaspoon of 35% H202 per gallon of water)
SM-90 (1:5 ratio of SM-90 to water)
Experimentgreenanswered grow question 4 years ago
Hello
You can try some hydrogen peroxide sprays, higher neem spray, try wiping it all down first and then apply. Otherwise there is a product called Old Stage Green Cleaner, it can be used on late flowering plants also, but it kicks wpm's ass! It also works on mites and eggs. It is a tad pricey but worth it. If you combine with neem oil it's not uncommon to be pm free for 2 months in a greenhouse setting. š
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