What Should You Prune in the Fall (and What Should You Leave Alone)?
As the leaves begin to fall and temperatures drop, many homeowners start preparing their landscapes for winter. While fall is a great time for seasonal cleanup and maintenance, pruning isn’t always one of the tasks you should tackle.
In fact, pruning the wrong plants at the wrong time can do more harm than good. Knowing what to trim and what to leave alone can make all the difference in keeping your landscape healthy and beautiful year-round.
What Can You Prune in the Fall?
Although most major pruning is best saved for late winter or early spring, there are a few exceptions.
Dead, Damaged, or Diseased Branches
Fall is a great time to inspect your trees and shrubs for dead, damaged, or diseased branches. Removing these can help prevent further damage and reduce potential safety hazards during winter storms. Always use clean, sharp tools, and avoid cutting into healthy growth unnecessarily.
Certain Perennials
Some perennials can be cut back in late fall once their foliage has naturally died back. Plants like hostas and daylilies can benefit from removing dead or decaying leaves to keep garden beds tidy and reduce places where pests and diseases may overwinter.
However, not every perennial needs a fall haircut!
Light Maintenance Pruning
Small corrective cuts, such as removing broken branches or minor hazards, can generally be made as needed. Save major reshaping and heavy pruning for the appropriate season for each plant.
What Should You Leave Alone?
It might be tempting to trim everything back before winter, but some plants actually benefit from being left untouched until spring.
Spring-Flowering Shrubs
Plants like azaleas, rhododendrons, lilacs, and forsythia typically develop their flower buds well before winter arrives. Pruning them in the fall can remove those buds, leaving you with fewer blooms in the spring.
For these plants, it’s usually best to prune shortly after they finish flowering.
Hydrangeas
Not all hydrangeas should be pruned the same way! Bigleaf and oakleaf hydrangeas often bloom on old wood, meaning their flower buds form on the previous season’s growth. Cutting them back in fall can eliminate next year’s flowers.
Other varieties, such as panicle and smooth hydrangeas, bloom on new wood and are generally best pruned in late winter or early spring.
Ornamental Grasses
While cutting back ornamental grasses in fall might make your landscape look tidier, leaving them standing can actually provide winter interest, shelter for wildlife, and some protection for the plant’s crown.
Wait until late winter or early spring to cut them back before new growth begins.
Evergreens
Avoid heavy fall pruning of evergreen shrubs and trees. Late-season trimming can encourage tender new growth that may not have enough time to harden off before freezing temperatures arrive.
Major pruning is generally better handled at a time appropriate for the specific evergreen.
Why Timing Matters
Pruning encourages plants to respond and recover. When done too late in the growing season, it can leave plants more vulnerable to winter stress or remove the buds responsible for next year’s flowers.
Here in Delaware, where temperatures can fluctuate throughout fall and winter, proper pruning schedules are especially important.
And remember, not everything in your landscape needs to be perfectly trimmed before winter! Leaving some seed heads, ornamental grasses, and perennial stems standing can provide food and shelter for birds and beneficial insects.
Let Borsello Landscaping Help Prepare Your Landscape
A beautiful landscape starts with proper care throughout every season. Whether you’re unsure which plants need pruning, looking to refresh your garden beds, or planning improvements for the upcoming year, the Borsello Landscaping team is here to help.
Ready to make the most of your outdoor space? Contact Borsello Landscaping today to discuss your landscape and start planning your next project!
