Answer: Does the foliage all look similar? It could be that the soil the non-flowering one is growing in is somehow different than the others' soil. Since the trees are only 3 years old, it might just be that that tree needs another year before it reaches maturity. If the foliage on the non-flowering tree looks healthy, I'd just be patient.<br><br>The only other thing I can think of is that high-nitrogen fertilizer can cause lush foliage at the expense of flowers. Lawn fertilizers are usually quite highin nitrogen, so if the non-flowering tree is in a place where it would receive more nitrogen fertilizer than the others, that could be a factor.
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