Outdoor plants usually will start flowering in aug or sept.. Depending on we're u live. Usually middle to late aug..and flinish up around fall.. Some can go all the way into late November.. Even early dec.. But usually the month Octobers harvest.. They go into to flower at the sign of day shortening it's light time.. It has nothing to do with temperature... As long as the roots don't freeze they will be fine.. A healthy plant can survive cold temperatures.. At ur 75 degree they should be loving it.