Peony growing above ground?
Would you please tell me what to do with my peony?
It is about 12 years old. Some of the roots have grown above ground and something has tunnelled through them. It had always done wonderfully until last year when the foliage was rather yellow and grown to about 1/2 of its usual height. There were also fewer blossoms than before.
What went wrong?
Thank you for your help.