Industry News: Tree Health

Q: How can I save a Jane magnolia that's dropping sap and has fungus on the branches?

Thursday, December 31, 2015  

Q: I have a beautiful Jane magnolia in my front yard that has been dropping dark black sap this year and has developed some kind of fungus on the branches that looks like the outside of a tiny bee hive or the bottom of a pine cone. The dropping sap has attracted tons of yellow jackets. I love my tree and would like to know how to help it become healthy again. I can submit photos upon request. Thank you in advance for your help and expertise.

A: For those of us in the Great Lakes region, the new magnolia cultivars have provided attractive features in our landscapes. However, many show a problem with magnolia scale. This sap-sucking insect can create a mess by the dripping, the black sooty-mold that follows, plus the yellow jackets, which feed on the sugars. Hire an ISA Certified Arborist to inspect and confirm this; it is treatable.


Responder: Jeffrey Ling, RCA #337, Fort Wayne, IN