I've noticed I get the worst PM problems around certain weather systems. Specifically, when it's cold and damp, which happens often here. I have a drosera spatulata that just can't shake it and is close to being terminated. This is a plant that cannot be overfertilized because any fertilizer at all will kill it. PM needs new growth to survive, but sometimes it seems to get very healthy plants when the weather is right. And sometimes treating with neem or sulfur knocks it right out, and sometimes it has no effect.
Recently we had constant rain for a week, and that got the PM off 80% of our squashes.
PM is a mystery. I hate PM.
Recently we had constant rain for a week, and that got the PM off 80% of our squashes.
PM is a mystery. I hate PM.