Two years ago I planted fifteen Grisilinia as a hedge. Most of them are doing very well. However, one died a year of planting. Iremoved this. A year later I note that another Grisilinia in the hedge has blackening and drooping leaves. I think it is dying. What can I do to keeep the other plants healthy. What is causing isolated Grisilinias to die?
Certified GKH Gardening Expert
This sounds like a specific to cultivar fungal infection. I would recommend putting dolomitic lime and wettable sulfur around each one. This will help kill off anything as long as it hasn't progressed too far. Here is an article for their care: https://www.gardeningknowhow.com/ornamental/shrubs/griselinia/growing-griselinia-shrubs.htm