Powdery mildew outdoors

Yes get it away from your other plants. You can try to kill the mildew but from my experience you better take your loss and focus on the other plants.

Hello. The others made some good points. But if you want to try here's what I do. I tablespoon of cinnamon in 1 quart/liter of water. Bring to a boil and turn down to simmer about 5 minutes. Put the lid on and let cool. Strain with coffee filter. Put in a spray bottle and spray on the leaves. You can treat any garden plants too. I'm using it on my zucchini plants today. Also look up milk for WPM too. But the milk in dense buds can cause other problems. I've read that hydrogen peroxide mixed down to 1% will work in knocking it down too. Good Luck. Chuck.

Unfortunately, that's probably going to be the best... I've tried to get rid of PM on pumpkins (total failure), cucumbers (total failure), peonies (total failure) ... it's a BITCH to get rid of. The problem is that the spores are going to be in the air so you've got to watch the rest of your grow VERY VERY CAREFULLY.... Get more space between the plants (if they're not in the ground), increase the air flow by trimming/defoliating... it comes from damp, humid conditions so the more airflow you can get through the rest of your grow, the better. And btw, DO NOT PUT IT ON THE COMPOST PILE!!!! If you're having PM issues, you might also want to watch out for bud rot.... I've just had to bag and tag two of my plants that developed that... the spores, again, are everywhere but can enter a plant that has been damaged (bug bites on the stems, a stem that has snapped for whatever reason, a bit of root rot)... Bud rot can and will consume your whole plant and pass on the spores to the others that might have been damaged ... and it can be fatal to smoke ... just a head's up! Good luck... I've got PM issues myself - but thankfully not on my grow - YET...

yes, and take some precautionary measures with the others.