The short answer why coconut palms are not grown in California is: they are not “cool tolerant” enough for the climate there. It’s not really a matter of being able to survive a specific low temperature, but of requiring warm conditions year-round.Click to see full answer. Just so, are there any coconut trees in California?One of the only known surviving Coconut Palm trees in the entire state of California. Despite California’s association with palm-lined beaches, almost none of those palms are the type that produces coconuts.Secondly, what tree does coconut grow on? cocos Subsequently, question is, why do some palm trees not have coconuts? Palm trees that appear in places like California and Arizona aren’t coconut palms. Coconut palms need the humidity and moisture of a tropical or subtropical environment to survive and thrive. Despite its name, the coconut isn’t actually a nut. It’s a drupe or “fruit.”Can coconut palms grow in Southern California?According to the website Digitalseed.com, California’s USDA Plant Hardiness Zones range from 5a to 11. The only regions of California that will support the coconut palm are along the southwestern coast, where temperatures remain balmy.