Answer: Coconuts are produced from Syagrus romanzoffiana, a rather tall palm tree. I found two sources in California:
Lemura Nursery in Dixon (707-678-4481) and Pacific Tree Farms in Chula Vista (619-422-2400). There's one more possibility - Exotica Rare Fruit Nursery in Vista (760-724-9093). Give one or all three a call - they may be able to help you.
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