forsythia pruning, how and when, prune right after blooming!

Forsythias are fast growing shrubs with brilliant yellow blooms that coat every branch in early spring
The best time to prune forsythias is immediately after flowering. Pruning forsythias anytime from mid-summer until just prior to bloom will reduce flowering in spring. When pruning mature forsythias, it's best to remove one-fourth to one-third of the oldest (largest) stems at ground level every other year.