The leafturn and leafdrop of Middle Fall accelerate with the prospects for frost, and the relative stability of early October comes apart. By the end of the week, most of the ashes, buckeyes, box elders, and black walnuts will be close to gone. Foliage barriers around your property may disappear completely. Shagbark hickory, chinquapin oak, tree of heaven and great shrub-like pokeweeds are thinning out. There is a steady drizzle of locust leaves. Elms, sweet gum, sassafras, sycamores, and