Treatment for Powdery Mildew

There are many varieties of mold and mildew. We will address them all here as Powdery Mildew. Protection Plus^TM works great to suppress Powdery Mildew. Once you have Powdery Mildew, it will be very hard to get rid of it unless you spray weekly to keep it from getting out of control. Before applying any fungicide, make sure the plants are fully hydrated. Flush the plants well with water and show a good amount of run-off. Wait 1 hour before application. Professional Fungicide Applicators Note: Many infestations come from stress caused by excess fertilizer in the growing medium. Check EC/PPM of the last few ounces of run-off from the pot. It must be the same EC/PPM as the water you used to flush with. Repeat the flush procedure until you get matching numbers, then treat for insects.
 

1. Effectiveness - For fungicides to be effective, they must be applied as soon as symptoms are noticed, but the best method of control is prevention.  Once mildew growth is extensive, controlling the situation with any fungicide becomes more difficult.   It is highly recommended to use Protection Plus^TM as a protectant to highly susceptible plants before the disease appears.

2. Coverage - Protection Plus^TM is effective only on contact, so applications must thoroughly cover all susceptible plant parts. As plants grow and produce new tissue, additional applications may be necessary at 7- to 10-day intervals as long as conditions favor disease growth. 

3. Dosage should stay at 4 ounces (120 ml) per gallon of water. Powdery Mildew is hard to control. 

4. If possible, use an airless sprayer. They emit a very consistent fine spray without a lot of pressure behind it. This will allow the plant’s leaves to not move around so much that you miss hitting the pests. 100 ft super light-weight hoses and extra reach attachments are available. Use the orifice supplied for fine mist applications. Make sure the sprayer is rated for food crops 

5. Much research needs to be done to determine whether powdery mildew as a whole or a certain strain affects certain plants systemically. There are thousands of strains of powdery mildew, some specific to plants as rose powdery mildew is different than powdery mildew found on cucumbers. In the case of Cannabis, at the time of this writing, it is up in the air which one or more powdery mildew strains affect Cannabis. Until more is known, the best way to keep powdery mildew from corrupting the crop is to consistently use a proper IPM program. It is known, however, that powdery mildew is much more common in plants that are underfed and overfed, with overfed being more problematic.