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Chinese Pistache Spring Flower Drop: Male/Female Biology

4-Year-Old Pistache Drops Green Clusters in Spring

Tree forms green bloom clusters in April that fall off. These are inconspicuous flowers. Chinese pistache is dioecious (separate male/female trees).

Why They Drop

If tree is female, flowers need male pollen to set fruit (salmon pods).
No male nearby → flowers abort.
If male, flowers naturally drop after pollen shed.

No Problem

Tree grown for fall color, not fruit. Enjoy the autumn show; spring drop is normal.

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