Question
Just received lab results that my Podocarpus hedge has Armillaria Root Rot and I am in Zone 9b.  I was told to remove the Podocarpus as all you can do is replant with species that is resistant to the root rot.  What can I plant there?  I need a privacy hedge.  Would Nellie R. Stevens Holly or other type of holly be resistant?  Do you have any other suggestions of what I can plant there?

Answer
Daniel:
Armillaria has a very large host range. Sometimes called "the shoestring fungus". Finding a suitable substitute that isn't susceptible may be tricky. Ilex (hollies) are listed as being a host. You may look at Elaeagnus (Russian Olive).  It is a fast grower, common in hedges, but has to be shaped regularly to keep it nice since it develops long branches (looks like a bad hair day!).You may wish to contact your local county Extension office for their suggestions in your area.  Also, consider speaking with the lab that provided you with your results.  They may have a list of "tolerant" plants to grow and may be a great place to start.  The Extension office is often located in the county courthouse or check in the phone book under "county govt" section. If you come up with a few possibilities, drop me a note and I can check those names against my list of host plants (those that can be susceptible to that root rot. Control of this disease in the landscape may not be feasible nor practical. It is often more of a concern to fruit and forest trees.

Steve