I recently found cherry worms in our Montmorency pie cherries. I did a little web searching and found info re: the worms here: http://www.jjnursery.com/care_cherry_worms.html Their solution is to spray with malathion - yuck. I found one possible organic solution here: http://www.kootenaycovers.com/ but i'm not sure a "bagged" tree in the middle of our yard is going to be all that attractive.
Another site: http://extension.usu.edu/tv/faq/faq_q=475 suggested this: "For helpful cultural control, place plastic landscape fabric or another barrier on the ground under the canopy of cherry trees to prevent larvae in dropped fruit from burrowing into the soil where they will pupate for the winter. Landscape fabric placed in the spring will also prevent adults from emerging from the soil. Keep the fabric in place year-round and prevent a buildup of soil and debris on top that would provide pupation sites for the fruit fly."
Will landscape fabric around the base of the tree be ok from the tree's perspective? Any other organic solution suggestions?