Ag Line: Solving Landscape Problems
By Wade Parker County Extension Coordinator

Almost on a daily basis, I get several problem solving calls dealing with landscape problems. I get calls ranging from grass dying, roses not budding correctly, trees wilting, and shrubbery having dead spots. Some of these problems are easy to solve, but unfortunately, some are more difficult.

When attempting to solve a problem, the plants in the landscape will usually let you know when they are sick by the symptoms they express. Once you notice that a plant is sick, wilted or discolored leaves, dying branches, and premature leaf drop are just a few of the symptoms of plant stress.

Often plant problems occur when a plant is not able to adapt to the site in which it is planted. For instance, junipers are extremely drought tolerant once established, but they cannot tolerate poorly drained soils. Shade-loving plants like azalea, rhododendron, and hosta often have problems when planted in areas that receive hot, mid-afternoon sun. Forcing plants to grow in harsh or unsuitable sites weakens them and encourages secondary insect and disease infestations.

At other times, plant problems result from poor cultural or management practices. We can literally kill plants with kindness by applying excessive quantities of fertilizer or water. Planting too deep is a common cultural mistake. When plants are set too deep in the soil, the lower portion of the root system becomes deprived of oxygen and dies. When attempting to diagnose and remedy a plant problem, be a detective and gather all the clues before attempting a cure. Ask yourself these questions:

+ What has the recent weather pattern been? Has there been heavy rain or drought?

+ Are other plants in the vicinity showing the same problem, or is this just an isolated case?

+ What are the soil drainage patterns? Does the soil stay wet for a long period after rain or irrigation?

+ What is the light level in the area and is the plant well suited to the amount of light it receives?

+ Has there been a chemical or fertilizer spilled in the vicinity of the plant?

+ Have there been any chemicals sprayed on the plant recently?

A sample of a live plant showing the symptoms and a soil sample (at least 1 pint) taken from around the plant will help provide an accurate diagnosis of the plant problem. Taking the time to properly diagnose a plant problem before trying a cure will save you time, effort, and money.

If you cannot diagnose the problem, please do not hesitate to give me a call!

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