How to Prune Evergreen Trees in Early Spring

Early spring can bring with it a rush of activity in the garden, preparing for the season’s approaching warmth and new growth, and it can be easy to focus only on the new sprouts, shoots, and blossoms out there. Authors Liz Ball and George Weigel are here to remind us in the midst of all that newness not to forget the long-term faces of our gardens—evergreen trees—in Pennsylvania Month-by-Month Gardening.

Some evergreen trees can be pruned or sheared for size control starting in early spring, so long as you don’t cut back so severely that you’re into the bare inner wood. Examples are arborvitae, Leyland cypress, cryptomeria, Hinoki cypress, cedar, and false cypress. American holly trees also can be pruned in early spring (in hardiness zones of 5A through 6B, early spring usually occurs in March), including back into bare wood, if necessary. Wait until June (early summer) after new growth finishes to prune fir, spruce, and pine.

Branches of leaf-dropping conifers such as dawn redwood, larch, and bald cypress can be thinned out or shortened now before new growth begins. The lowest limbs of all trees can be removed this month if you need more space to sit or walk under—or if you just want to expose more of the trunk. You might also find that the lower limbs of aging evergreens are dying; these can come off now too. Rule of thumb: never remove branches more than one-third of the way up. For trees you’ve been staking since last spring, remove the stakes late this month or next. One year is long enough.

How to Prune Evergreen Trees

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  1. First, remove any dead or snapped limbs. Make a clean cut back to live growth or back to just outside the branch collar (the ringed area where a branch attaches to the trunk) in the case of a whole lost limb.
  2. Pine, spruce, and fir grow in clusters of shoots called “whorls.” When the size reaches the desired maintenance level, these are best maintained by letting the new season’s shoots grow and then snipping all or most of it off. The best timing is mid- to late spring.
  3. Arborvitae, yew, cedar, falsecypress, juniper, hemlock, holly, cryptomeria, Hinoki cypress, and Douglas fir are best pruned at the end of winter, just before new growth begins. Avoid cutting back so far, though, that you’re into the bare inner part of the branches. This timing lets new growth quickly hide your pruning cuts. Lighter maintenance trims also can be done again in early to midsummer.
  4. Species that tolerate shearing and even harder cutbacks into bare wood include holly, boxwood, yew, hemlock, nandina, and euonymus. Still, it’s best to cut back no farther than where green growth intersects bare wood. The best timing is end of winter through midsummer.
  5. Avoid pruning evergreens from late summer through early fall. That’s when dormancy is beginning. Late-season pruning can encourage new growth that won’t “harden off” before winter, making it more susceptible to cold kill.

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Pennsylvania Month-by-Month Gardening: The when-to and how-to schedule for growing, caring for, and maintaining your Keystone State garden!

Never garden alone! The Month-by-Month Gardening series is the perfect companion to take the guesswork out of gardening. With this book, you’ll know what to do each month to have gardening success all year, from January to December. It’s full of the when-to and how-tos of gardening along with richly illustrated step-by-step instructions, so you can garden with confidence. Reap the benefits of the gardening “experiments” and experience by authors Liz Ball and George Weigel.

With a fresh look and updated information, Pennsylvania Month-by-Month Gardening includes all the when-to and how-to information that has made these books so popular over the years, presented in a new, easier-to-use format with more full-color photography and the most current information available. Complete with specific advice on growing flowers (both annuals and perennials), bulbs, grasses (both lawn and ornamental), roses, groundcovers, shrubs, trees, and vines, this book is one no garden lover will want to miss! In the winter, certain tasks are needed to plan for and improve the next growing season. And once things really start growing in the spring and summer, you’ll find advice on the best way to get the most beautiful flowers, the lushest lawns, and the sturdiest trees. From planting to watering and fertilizing, and from maintenance to problem solving, Pennsylvania Month-by-Month Gardening shows all levels of gardeners the best practices to grow satisfying and rewarding results.

Liz Ball is a horticultural writer, photographer, researcher, and teacher whose articles and photographs have appeared in numerous catalogs, magazines, and books. Ball wrote regularly for the National Garden Bureau and Burpee’s websites. Her weekly Yardening column appeared in her local newspaper for more than fourteen years. Ball has authored or co-authored a multitude of books, including the Pennsylvania Gardener’s Guide (also for Cool Springs Press).

She writes on a large number of topics for gardeners but specializes in addressing issues that concern non-gardening homeowners who have lawns and plants to care for but a limited amount of time or interest of working in the yard (whom she calls “yardeners.”) After decades spent teaching writing, literature, and history at the secondary school level, Ball devoted herself to horticulture. She has taught courses on gardening for local community adult and arboretum programs, as well as for various universities. Ball is a frequent lecturer, speaking often to garden clubs, hort societies, civic groups and to the public. In her spare time, Ball concentrates on a two-acre yard that serves as her informal laboratory and demonstration garden for all her “experiments.”

George Weigel is a garden writer, garden designer, garden speaker, Pennsylvania Certified Horticulturist, and–as his balding, plant-killing brother likes to put it–a “Certified Gardening Wacko.” In central Pennsylvania, George is best known for his Over the Garden Fence columns that have appeared weekly in the Patriot-News, Harrisburg’s newspaper, since 1993. The Garden Writers Association named George’s column as one of America’s five best garden columns in 2008. His articles have also appeared in such magazines as HorticulturePeoplePlaces and PlantsGreen ScenePennsylvania Gardener, and Central PA Magazine. When he’s not writing, George spends his time operating his own garden-design and consulting business for DIYers, leads garden-themed tours, gives frequent lectures, and is a member of the Pennsylvania Horticulture Society’s Gold Medal Plant Award committee. George is the author of Cool Springs Press’ Pennsylvania Getting Started Garden Guide (2014). Visit George’s website: www.georgeweigel.net