Well, the last thing I would do is look for any branches that have been broken or damaged in transport. Now this looks like it was snapped right off here. Yeah, and just prune off the damaged branch. No, none at all. So just anything that's injured.
Spring is a great time.
Early fall is a good time. Summer is OK if you baby the plant. Meaning lots of moisture. OK, thanks, Astrid. And remember, lots of moisture means one inch of water per week during the entire growing season.