North County Outlook - Community newspaper serving Marysville, Arlington, Tulalip, Smokey Point, Lakewood

It's time we understand how to prune

 

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Understanding how to prune the plants in your garden is an important skill for all gardeners.

There is no task in gardening that generates more anxiety then pruning. Simply put, the real secret to proper pruning is in understanding how a plant will react to the cut you make on a branch. "Where" you make that cut, and to a lesser degree "when," will determine how the plant will respond. There are only two kinds of cuts in the pruning world: thinning cuts and heading back cuts. Understand how a plant responds to these cuts and you've got pruning figured out. It's that simple.

A heading back cut is where you cut off the end of a branch or stem. Doing this causes lots of new branching and re-growth right below that cut. When you shear a hedge you are essentially making heading back cuts. These kinds of cuts are perfect for plants where you want lots of dense, bushy growth. Unfortunately, heading back cuts destroy the natural branching patterns of plants and can ultimately leave you with a yard full of green meat balls.

A thinning cut is where you completely remove a branch down to where another branch is growing. Thinning cuts are much less traumatic and don't cause the rampant re-growth that heading back cuts do. Your goal with thinning cuts is to remove selective limbs to open up the plant and let in some light, enhance the form, or gently reshape the plant.

In addition to knowing where to prune, knowing when to prune is also important. You can do what I call light pruning almost any time of the year. If you have flowering plants like rhodies, azaleas or winter blooming heather, or summer blooming roses or hydrangeas, timing is everything. Prune at the wrong time and guess what? You may not get any flowers.

Generally speaking, if a plant blooms early in the spring, before it starts growing new foliage you should prune it right after it finishes blooming. Then it has the rest of the year to produce new flowers for the following season. Never prune it in the late summer or fall because you will be removing potential flower buds.

If on the other hand your plant blooms in the summer on the ends of the new growth, you can prune it at the beginning of the season. Roses are a classic example of this kind of plant. We prune them hard in the spring which stimulates lots of new growth, which in turn produces lots of new flowers at the ends of that new growth.

It's important to remember that you will rarely kill a plant by pruning it. You might disfigure it or cause it to not bloom or produce fruit for a year, but in most cases it will recover. It's always better to do a little pruning every year rather than a lot of pruning once in a while. If you've got questions about how and when to prune your rhodie that now blocks the living room window, or your apple trees that are loaded with water sprouts, or the wisteria vine that has engulfed the arbor you so carefully constructed for it, or your hydrangeas that never seem to bloom, then take advantage of a free pruning class this Saturday at 10 a.m. or Sunday at 11 a.m. here at the nursery. Your garden will be glad you did.

Steve Smith is owner of Sunnyside Nursery in Marysville and can be reached online at info@sunnysidenursery.net.

 

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