small holes on stem of fruit trees - Knowledgebase Question

San jose, Ca
Avatar for snair_misc
Question by snair_misc
October 2, 2008
I have an apple tree (about 6 yrs old) with a stem of about 3

Answer from NGA
October 2, 2008
Without seeing the trees, I can only offer educated experience: what you describe sounds like borers are attacking your fruit trees. These beetle and moth larvae chew (bore) their way into trunks, crowns, and stems of many plants. Borers holes provide entry to infectious diseases, leading to rot that can kill plants. They are difficult to control with sprays, since spraying must be timed before the pest actually enters the plant.

After leaves fall in autumn, spray horticultural oil as directed on the product label. In spring, make frequent checks of tree trunks near the soil line for evidence of borers. If you find a hole, probe inside with a stiff wire to kill the caterpillar. I would also encourage parasitic wasps to visit your garden by providing lots of flowers in bloom throughout the growing season.

You might also check with your local cooperative extension office to see what other control measures are available in California. University of California Cooperative Extension; 1553 Berger Dr. ; San Jose, CA 95112; (408) 282-3104

Best wishes with your trees!

You must be signed in before you can post questions or answers. Click here to join!

« Return to the Garden Knowledgebase Homepage

Member Login:

( No account? Join now! )

Today's site banner is by Paul2032 and is called "Kalanchoe"

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.