Don't prune further back than the current year's growth. Arborvitae, junipers, yews, and hemlocks grow continuously throughout the growing season. They can be pruned any time through the middle of ...

You should add some animal manure, coarse sand, gypsum, road base stones, and a lot of compost. During the summer, remember to keep the clay moistened with heavy mulch to prevent it from hardening.