Last year I carefully planted two thornless blackberry bushes in the back yard. This year I strung bailing wire between two metal poles to hold the growing canes. Soon tiny white blossoms set on the bushes. Before too long small blackberries appeared, as well as hungry birds. I acquired some PVC pipe from a neighbor who didn’t want her garden cover any longer. It looked a little like the hoops of a Conestoga wagon without the cover or the wheels….