Rock placed on top of the soil contributes to a soil problem, but wood chips won’t. Spraying the plants with iron fertilizer might be a temporary fix but not a long-term one.
Bob Morris
![Bob Morris](https://www.reviewjournal.com/wp-content/uploads/2017/04/bob_morris_980x550_040417eb_001.jpg?w=900&h=550&crop=1)
Bob Morris is a horticulture expert living in Las Vegas and professor emeritus for the University of Nevada. Visit his blog at xtremehorticulture.blogspot.com. Send questions to Extremehort@aol.com.
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