TMA of Colorado
New member
What's everyone's plan for controlling powdery mildew in your greenhouses for the next month or so until they finish?
I've dealt with it earlier this spring, we had 3 weeks straight of rain every day, no sun and cooler than normal weather. That weather caused the PM to get going on a couple of plants in my greenhouse. I burned sulfur every night for a week and then every other night for another week and didn't have any problems until I noticed it creeping back 3 days ago. I am in the process of treating it the same way; burn sulfur all night for a week or two then every 2nd-4th day after until it is all harvested.
If you have a greenhouse and are in an area that gets PM, i'd suggest buying a sulfur burner now, before you need it. You can burn it for a few hours here and there for control maintenance, which is way better than having to burn all night for a week(s).
I've dealt with it earlier this spring, we had 3 weeks straight of rain every day, no sun and cooler than normal weather. That weather caused the PM to get going on a couple of plants in my greenhouse. I burned sulfur every night for a week and then every other night for another week and didn't have any problems until I noticed it creeping back 3 days ago. I am in the process of treating it the same way; burn sulfur all night for a week or two then every 2nd-4th day after until it is all harvested.
If you have a greenhouse and are in an area that gets PM, i'd suggest buying a sulfur burner now, before you need it. You can burn it for a few hours here and there for control maintenance, which is way better than having to burn all night for a week(s).