Asked February 01, 2023, 10:24 AM EST
I have around 12-16 apple, pear and peach trees in my backyard. I realized last fall that I had an infestation of plum curculio. I have tried looking for how to treat it, but most extensions use terms I am not familiar with (e.g. https://www.canr.msu.edu/news/effectively_controlling_plum_curculio_in_stone_and_pome_fruits).
I am planning to spray horticultural oil and copper this week, but I am under the impression I also need to spray some stronger pesticides. The above guide made it sound like I can use sevin after petal fall, and then something like bonide fruit tree spray (an organophosphate) if I see the adult weevils later.
I was hoping you could easily tell me to spray "X" pesticide at "Y" time, then "XX" pesticide at "YY" time.
Montgomery County Maryland