Oak leaf mountain ash started to produce flower clusters in April then stopped. No leaves have appeared since then. Tree is located in Thornhill, Ontario, Canada. The tree is about 10 years old and every year produced flowers, leaves then berries in fall.



  1. 0 Votes

    This could be a sign of many things, from disease, to leaf scorch, to tree decline, to pests. I can’t really diagnose your tree, so I recommend contacting your local arborist for a consultation.

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