I have little worms all over my evergreen trees and shrubs that are making little sleeping bag like structures around themselves. They are killing some of the smaller trees. What are they and what do I treat them with?? I prefer to use an organic method if there is one available. There are way to many to pick them all off. Thanks for any suggestions:)

Lori, Sounds like bagworms. As long as they are feeding you can use Bt products such as Dipel or Thuricide. Once they quit feeding your best bet is to pick them off by hand then destroy them.