Solution Center Articles

The Always Green Tree

People throughout the nation associate Colorado with evergreen trees. They’re thinking of the mountains but there are plenty of these emerald beauties all the way to the Kansas border. O.K., so most of them are in home landscaping sites but so what! Pines, spruces, firs; they are green year-round and plenty welcome.

Like all landscape plants, they often become the host to insects like spider mites, aphids, and the like. If the tree isn’t too tall, one of the best “insecticides” for these problems is to start with a thorough hose scrubbing. Use hose-end nozzles that create a strong knock’em down stream, start at the top of the tree and scrub around and down all the way past the lowest branches. If you have these insects, thousands of them will be “evicted” to ground level and most will not have the strength to crawl back up.

This scrubbing also provides another plus. Over time, evergreen needles get clogged up from seasonal pollution including auto exhaust and smog. Each needle has rows of tiny holes that they “breathe” in and out from. When these holes get clogged the health of the tree can be affected and browning can eventually show up. Do your water-washing morning or evening which misses the heat of the day and conforms to water restrictions.

To diagnose if you have problems from mites or aphids, get a white sheet of paper and then examine the accumulated debris. Aphids of whatever color are easy to spot, they are about the size of the head of a pin. Spider mites are really tiny, but if you have a lot of black dots on the paper, and these dust-sized specks are crawling around, you’ve got unwelcome visitors. If only a few are present don’t worry too much and check again in a week or so. If the tree is loaded, get to scrubbing! When things get clear out of hand check your local garden center outlet for insecticide control or call a tree service of your choice.

Evergreens, of course, respond to reasonably spaced thorough watering and a good application of Revive around the areas under the longest, lowest limbs will help subsequent water move downward to the root areas helping to reverse hot weather problems.


Written by Lawn & Garden Expert and Consultant for Revive Lawn & Garden Products, Dale Langford - Have a Question for Dale? Ask Here