Furthermore, most perennial plants need to be cut back entirely either before or after the growing season. Last Updated: February 26, 2020 Approved. But there’s plenty left to do during the growing season, especially with flowering shrubs. This article was co-authored by Lauren Kurtz. X. LATE WINTER/EARLY SPRING: Prune summer blooming shrubs by cutting back branches to healthy buds pointing in the direction you want shrubs to grow. These shrubs also need to be pruned early in the summer so they have time to … But there are several very timely pruning tasks left over for June. You normally think of winter as the main time for pruning (or at least horticulturists do). Prune … Expert Q&A Tips and Warnings Things You'll Need Related Articles References Article Summary Co-authored by Lauren Kurtz. Early Summer Pruning. May 29, 2018 - Pruning is a year-round activity. Here are some that rise to the top of the list. As a general rule, you prune summer-flowering shrubs in the spring and spring-flowering shrubs in the summer. Why? These trees and shrubs set their flower buds the prior fall and adhere to the rule of thumb to hold off on early spring pruning until after their flowers fade. And they require regular pruning and deadheading all season long. The commonly accepted recommendation, not to prune in late summer or early fall does not seem to harm the shrubs. Lauren Kurtz is a Naturalist and Horticultural Specialist. 3 Pruning Late Summer/Early Fall Clematis Other Sections. If you prune them in the fall, winter or spring, you'll cut off their flower buds. Pruning in the mid- to late-summer negatively affects the flowers the following spring. Trees and Shrubs to Prune in Late Spring/Early Summer After Bloom . Pruning in late fall or winter certainly works, but late summer or early fall should also work in zone 5. References: 1) Photo Source: Steve46814 (Cloud-pruning in Hallyeo Haesang National Park, Geoje city, South Korea) You'll have a couple of weeks grace period, after flowering, to get this pruning done before next seasons buds begin being set. Lauren has worked for Aurora, Colorado managing the Water … These need to be pruned soon after their flowers fade in late spring and early summer. Shrubs that bloom in spring to early summer, such as lilacs and forsythia, develop flower buds in summer, the year before they bloom. The heavy-duty pruning (removal of diseased, damaged, crossing and other problem limbs) is best left for late fall through to early spring, while the leaves are off. By Lauren Kurtz but there are several very timely pruning tasks left over for.. Warnings Things you 'll cut off their flower buds several very timely tasks... And shrubs to grow of winter as the main time for pruning or. To grow very timely pruning tasks left over for June or winter certainly works, late... 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2020 early summer pruning