Most important thing, mostly cuz I grow in AZ, is to acclimate them properly. I put mine outside in a shady area for about 6 hrs for about 1-2 weeks, then bump it up to 10 hours for the next week. By then mine are ready to take on the full sun. Though my conditions are a bit unique in the country[hot as fuck and dry as hell(summer highs in the 100's and up to the one hundred and teens)] I use window screening to reduce the intensity.