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Bob Morris

Bob Morris

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.

Wet soil or mulch against tree trunk can cause collar rot

Q: The leaves on my fig tree appear burned after this rain. I foliar sprayed it with neem oil and soap and fish protein isolate. These trees were planted last fall and mulched with 1 foot of woodchips and looked amazing until now. They are watered three times each week in the summer.

Rehabilitate plants damaged by chewing insects

Q: We’ve noticed leaf damage this year on our rose bushes and apple and pear trees. More than previous years. But, peach, apricot and pomegranate seem unaffected. Some of our roses were decimated. Any idea what pest causes this and how to control it?