Sugar like crystals in soil under diseased peony
Also should I remove and replace the mulch that was around the diseased peonies, leave it and replace it in the spring, or just leave it? Should I mulch over the cut down stems or leave them be?
Oakland County Michigan
The white particles you see in the soil could be calcium or salt. To find out for sure you should have a soil test taken in this area. You can purchase a soil test from MSUE bookstore.com. Until the soil test results come back, I wouldn't do anything with the mulch.
Thank you for using Ask an Expert.