Why Did My Four Year Old Rowan Tree Not Produce Any Leaves Or Berries This Year?

Question

The tree produced leaves and berries last year but none this year. The leaves started to form but then shrivelled and fell off.

Answer 1

Short-lived Rowan trees are susceptible to several diseases as well as insect pests. These articles should help:

https://www.gardeningknowhow.com/ornamental/trees/ash/european-mountain-ash-2.htm
https://plants.ces.ncsu.edu/plants/sorbus-americana/
https://extension.psu.edu/mountain-ash-diseases