Why does my Mountain Ash die off after a few years ?
I have had two Mountain Ash trees , one was around Twelve inches in circumference, died off after about twelve years . The second is around five “” in circumference, and it is slowly dying off now also. I have had it in the ground for 5/6 years . Help please , I would love to know what is happening.
Certified GKH Gardening Expert
Without seeing it, or the symptoms in question, it would be very hard to say. There are many insects and fungus that will cause the death of trees, and also many environmental issues that could have caused the death as well.
In the meantime, this article will help you to narrow down what is killing off your trees: https://www.gardeningknowhow.com/ornamental/trees/tgen/sudden-tree-death-causes.htm