Mature goji berry plants survive in the deep desert around here in full sun, so I presume that means that they are very drought tolerant.
JL Hudson, Seedsman offers 2 varieties - the 'normal' Chinese, and one from the Sonoran Desert of Mexico.
The Chinese one is hardy to Zone 5, and the Sonaran one
should be even more drought tolerant. (I would
water it like a tomato or pepper for the first year, and then, probably leave it be after that.)
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