How do you treat rhubarb crown rot?
Beside this, how do you treat crown rot?
Chemical control of crown rot can be inconsistent. Fungicides containing flutolanil, fludioxonil or azoxystrobin are labeled for Sclerotium rolfsii on many ornamentals. These materials are most effective if applied preventatively as a directed spray or soil drench during the early stages of infection.
Also, why are the leaves on my rhubarb turning brown? Rhubarb is a resilient plant, but it can develop two fungal leaf spots. As the leaf tissue dies, the spots turn tan, but they don't fall out and leave a hole. After ramularia has spread to all the leaves, it will cause the stalks to turn brown and wither.
In this manner, how do you revive rhubarb plants?
Rake the straw mulch away from the plant and put down 2 or 3 inches of composted manure around the plant in a ring. Do not cover the crown where the leaves will emerge. Then add the straw to the top. As the manure breaks down during the season, add straw for that magic three inches.
What is killing my rhubarb?
Most lawn weedkillers will also kill rhubarb – look for one that contains Dimethylamine salt. Spray the weed killer as indicated by the manufacturer, onto the area where the rhubarb was located. Then leave the area for 24 hours without watering. Remove any rhubarb sprouts as they come up.