Worms coming from flowering bush
Worms emerging from large soft brown cocoons on my yellow flowering bush. I have a yellow flowering bush, I'm sorry I don't know the name of it, but it is covered with brown cocoons. The cocoons look similar to a rolled dryed leaf with bits of debris on them but, when touched, they feel soft almost fleshy. They are brown in color and are plump. There is a hole on top of the cocoons, by the branch their suspended from, and every so often a black headed worm sticks its head out. Sometimes the cocoons move, swaying back and forth because the worm moves around inside. I have seen the worm (smooth and black) drag the cocoon behind him, if fallen from the bush. What kind of worm is this? Is it a moth or a pest? They really give me the creeps and I don't know if I should kill them or if they are something I should leave be. Thanks for any info!
Most caterpillars can be controlled with a treatment of Bt or Bacillus thuringiensis.
Here are some links for you.