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Jul 18, Best Time to Prune 5 Common Trees in Pennsylvania. 1. European Hornbeam: Discover Your Options. Credit: Plant Image Library. 2. Dawn Redwood: After the Needles Drop.

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Fall pruned evergreens are more susceptible to winter injury.

Willow Oak: Late October to Early March (Dormant) 4. American Beech: As Needed. 5. Western Redbud: Winter and/or After Blooming. Estimated Reading Time: 6 mins.

Neglected, overgrown spring-flowering shrubs often require extensive pruning to rejuvenate or renew the plants.

Mar 12, Generally, it's towards the end of winter that you trim, prune or otherwise cut shrubs in Pennsylvania. But that decision depends upon two conditions. But. The best time to rejuvenate large, overgrown shrubs is late winter or early spring (March or early April). Heavy pruning in late winter or early spring will reduce or eliminate the flower display for 2 or 3 years. However, rejuvenation pruning will restore the health of the shrubmulching.barg: pennsylvania.

Stop pruning trees and shrubs; Don’t fertilize after mid-August; Continue dead-heading flowers to prolong bloom time; Cut hollyhocks down to ground after blooming; Add fall perennials to garden; Seed new lawns after August 15th. Best time of year to seed is generally from August 15th through October 15th.

September Water during dry spells.