The pistachio tree is dioecious (i.e. two houses”), meaning the male flowers are borne on one tree and the female flowers on another. Therefore, both male and female trees are required to produce nuts.
Pistachio Nut Tree (Pistacia vera)
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Landscape size: 25'-30' tall and 20' wide
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Growth rate: Fast (up to 1 inch per day in summer)
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Light requirement: Full sun (at least 6 hours per day)
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Hardiness Zones: 7 through 11
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