I have a large clipped boxus sempervivum which was transplanted a year ago. I have noticed that the leaves on the inside of the shrub are turning yellow and falling. There is new growth on the outside though so the shrub is still looking green, but large areas on the inside of the shrub are gradually getting bear.
I fear this is some root fungus . Could you kindly advise me as to whether o not there is any disease control I can consider please?
- 3 Jul, 2011