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Pruning EVERGREENS

by BRIAN MINTER
 Feb. 1

After visiting Japan a few years ago, my perspective on Pruning certainly changed. From a country where virtually every ornamental tree is pruned severely, both for artistic and limited space reasons, we can learn many things about trimming trees. One of our biggest mistakes in landscaping is allowing trees to grow until they become so large they are overpowering. Overgrown trees are difficult to prune back hard and yet still keep them looking attractive. It’s also difficult to prune back new landscape plants, especially when you’re wanting your trees to grow quickly and fill in. I’m afraid, however, it is something that must be done.

Many people hesitate to prune an evergreen because they are afraid of ruining the tree. Its shape can certainly be distorted by incorrect Pruning, but seldom is the tree destroyed. Experimenting with a few trees in your landscape is one of the best ways to learn, and mistakes can usually be corrected. Armed with a little basic information and common sense, anyone can prune their landscape plants.

Timing, however, is everything. The best time to begin Pruning most evergreens is now. Evergreens or conifers are the easiest of all trees to prune. Tall growing cedars and cypress can be pruned with two-handed grass shears for light trimming, or with electric or motorized hedge shears for heavy going. Simply prune following the natural shape of the tree. Columnar cedars, such as ‘smaragds’ and ‘pyramidalis’, should be pruned in narrow columns, and trees like Golden Cedars and Green Cypress should be pruned in a little wider pyramidal form for the ultimate effect in a landscape. Their tops can be cut off at any height. Their sides must be sheared yearly to maintain an attractive form. The secret to maintaining good colour and new growth is to prune into the soft wood of last year's growth. Cutting into the old hard wood results in rather shaggy-looking trees. Globular shrubs, like Golden Berkmans and the beautiful Hetz Midget cedar, should be pruned in the same manner. Ground cover plants, like junipers, should be pruned hard each year to maintain an attractive oval form. So often they are allowed to sprawl unevenly over the ground with huge branches jutting out here and there. When you try to cut back these overgrown plants, it is almost impossible to avoid leaving a woody-looking, unattractive stump. If you find a great deal of ‘browning out’ on your junipers, apply copper spray now to control this problem. All ground covers need an annual trimming when they are young to encourage an even, full and attractive growth pattern.

Boxwood and privet hedges need two hard trimmings a year to keep them looking neat. Prune them now and again the first week in July. Trim rather vigorously, otherwise they will quickly get away on you. To keep your boxwood green, ali a little dolomite lime now. Fir, spruce and pine are the exceptions to dormant conifer Pruning. Because spruce and fir send out growth from buds that pop in April and May, it is best to prune them after the buds have opened and the new growth has just begun. In doing so, you allow the soft new wood enough time to develop buds for next year's growth pattern. The same is true for pines. The growth candles at the tip of every branch must sprout and develop before any Pruning takes place. Cut the new candles in half when you prune, and it will result in a fuller, more compact plant. Unless you live in a very large landscaped area, all spruce and pines should be pruned narrow and hard to maintain a form that is both appropriate and attractive in smaller landscapes. Dwarf Mugho pines should be pruned in a low dome shape for the most pleasing effect.

Over the past 20 years, we’ve learned so much at Minter Gardens about Pruning evergreens. One of the most important lessons has been that to keep the size of trees in proportion to the landscape and to maintain their beauty far longer, they need an annual Pruning.

Article courtesy of:
Minter Gardens Minter Gardens

Exit #135 Highway #1, Chilliwack, BC, Canada   V2P 6H7

Phone: (604) 794-7191   Fax: (604) 792-8893

www.mintergardens.com/

email: Click Here

32 Acre World Class Show Garden & Event Facility

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