Tilling up strange cocoons
I tilled up strange cocoons last season when I was expanding my garden and I never found out what they were. The area being tilled was previously nice grass.
Is it safe to say that any cocoon tilled up in a vegetable garden is a critter you don't want?
They were between and inch and inch 1/2; hard, shiny brown, and they seemed to be almost see-through. The cocoons were sorta spiral shaped with slight imprints of wings.
I was also bringing up two types of big, black, shiny beetles. One seemed to have more of a two segmented body and the other seemed to have a 3 segmented body. I was wondering if the black beetles were also bad.
I am in So. Oregon zone 7. Thank you for any help!