Answer: Prosopis (Mesquite) are quite hardy trees and prefer growing in arid sites. The species you saw locally has obviously adapted to the rather mild year-round climate in San Diego. If you have the space, and really want to grow a Chilean Mesquite, you shouldn't have any difficulty with it. Don't intentionally water after it has become established, and try not to plant it too close to lawns or other gardening spaces. The roots naturally travel great distances to find water and may pop up in areas that are routinely watered. Good luck with your new tree!
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