I started off some goji plants in May: simply cut open the dried berries you buy in health shops, scraped out a few seeds (sticky, but tiny) and put them in pots. I kept them well watered and ended up with about 10 shoots (took a couple of weeks to appear).
They were fine and developed leaves by June. Then left them in partner's care whilst visiting family. After 3 weeks they had gone ballistic and half of the plants were 4 feet long, limp, and quite unhappy. Cut some down, and put on veranda. Cut some others (very straggly) down and left on windowsill.
So far, I have 2 long, slightly straggly plants with only 2 thin branches in pots on the veranda. 3 plants died in the ground (we had night frosts already) and 2 are doing alright on the windowsill - just nothing to look at. I hope they make it through the winter, and will cut down any thin branches, as that seems to encourage more strength. Next year I am hoping to put them all out on the lottie. Apparently they will be frost-hardy in their second year.