Dear Bay Gardener I have a few blueberry bushes that are about seven years old that have produced nicely but are getting a little scraggly. I have been trimming runners and eliminating water shoots, but I’m not certain of the best time to prune the large bushes for renewal growth. Instinct tells me that pruning in late summer or early fall would give them a chance for growth once the weather cools, but I would love to have your expert advice. I always read your column in Bay Weekly....