Overnight, a beautiful snow storm of 5-9 inches had blanketed the metropolitan area. But the ginkgo, with most of its densely-packed, fan-shaped leaves yet to fall, is threatened with a major pruning.  A heavy snow can stick to the leaves and weigh down the graceful, drooping limbs until they snap. We lost a lot of the tree several years ago in an early snow storm infamously referred to as the "October surprise." This year no pruning, but a surprise show.