The Q&A Archives: Chinese pistachia tree

Question: I have a FEMALE chinese pistachia tree (as well as a male) in my front yard. After the leaves have turned color and dropped from the tree, usually November/ December, it produces clusters of small hard red berries. I want to prevent this and bought a product which is sprayed onto the flower to prevent unwanted fruit on ornamental trees. I've never noticed any

Answer: The Chinese Pistache has green blooms that are not showy. It's difficult for me to determine exactly when your tree might flower because flowering is triggered by the weather. However, the Chinese Pistache usually blooms in April and May. You can use a spray to keep the flowers from developing seeds, but it will be labor intensive and as your tree grows it will become more and more difficult to spray every single flower. As an alternative to spraying, you could prune off or rub out the flowers. As a final suggestion, you might want to replace your female Chinese Pistache with a male. Best wishes with your landscape!

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