Hydrangeas

My hydrangea bushes have multiple blooms this year, because we did not prune them at all last fall or this spring.  After watching a few You Tube videos and reading a few articles, I believe I finally know how to care for these beauties.  This variety of hydrangea grows on "old wood," so the less we prune the better, as far as I can tell. I think we could prune a little and have larger flowers, but I'd rather have so many smaller blooms.