Perennial, it's a shrub rather than a tree!
Very easy to grow and dry-tolerant!
Also very cold-tolerant, very healthy berries!
Fruiting starts at third year.
Lycium chinense is one of two species, from which the goji berry or wolfberry is harvested. The plant is used in traditional Chinese medicine for the treatment of nightsweats, pneumonia, cough, hematemesis, inflammation, and diabetes mellitus.
For germination, simply sow the seeds in rich good soil, keeping moist and warm. Germination takes about two weeks and has a high percentage. Then, dry sparsely the plant and provide abundant light. The plant tolerates minor frost but thrives better with warm and sunny weather. First crop occurs after 2-3 years after germination.