by Peter B.
The showy blooms of the genus Hydrangea are hard to beat for reliable color in the garden, but when do you trim? We get this question a lot! There are basically old wood bloomers (bloom on last year’s wood) and new wood bloomers (bloom on wood produced this season). For the old wood bloomers, I would only prune to control size or shape. Also don’t forget to remove spent flowers from your plants. This will keep them tidy looking. Read more