Answer: Dogwoods are prone to developing disease if they are pruned in the summertime. The absolutely best time to prune is while they are dormant (Jan., Feb, March). Or you could prune just as the buds begin to swell in the spring but before they produce new foliage. Most gardeners prune dogwoods back about once every three years to keep them in control and looking nice. If at all possible, I'd wait to prune.
Best wishes with your landscape!
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