The Q&A Archives: No Berries on Mountain Ash

Question: I have a mountain ash tree that I planted about 4 years ago.It is now about 12 feet tall but it has never flowered or produced any berries.Can you tell me whats wrong.I live in northern Michigan and the tree seems to be growing nicely. Thank you for your help.

Answer: Sounds like it needs fertilizer. However, Nitrogen encourages leafy growth, often at the expense of flowers and fruit. Select a fruit tree specific fertilizer, or use a fertilizer that promotes bloom, such as "0-10-10" or "15-30-15." The numbers represent the amount of nitrogen, phosphorus and potassium contained by the fertilizer. Berry production does vary each year due in to weather conditions. When blooming, I would recommend fertilizing it with 0-10-10 fertilizer.

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