WHAT TO DO ABOUT POWDERY MILDEW
Avoid Large Swings in Relative Humidity
It’s best to maintain relative humidity between 40-60%, with 50%
being a good target. If powdery mildew is born, a lower humidity
stimulates the fungus to make more spores and spread.
Provide Good Air Movement
Provide plenty of space for your plants and use oscillating
fans to produce a gentle breeze in your garden. Stagnant air
allows moisture to build up on the undersides of the leaves,
creating a vapor barrier. If transpiration is disrupted, calcium
uptake will be disrupted as well. Adding filters on all intake
vents is also a good idea.
Remove Infected Leaves
At the first sign of powdery mildew, carefully remove infected
leaves and discard them from the growroom. Be careful not to
spread the spores in the process.
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Maximum Yield USA | November 2015