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I'm at 45 N latitude, the average frost was, in most areas, from mid-September to early October. If I grow in a greenhouse, how late will I be able to harvest?
AS LONG AS U HELP KEEP THE GREENHOUSE TEMPS UP U SHOULDNT HAVE A PROBLEM.. U WILL NEED TO SUPPLY EXTRA LIGHT ALSO DURING THE TIMES WEN UR NOT READY TO FLOWER.. AND ON TOP OF THAT.. ULL NEED A BLACKOUT COVER OR UR GREENHOUSE SO U CAN FLOWER ALL THE TIME.. SORRY CAPS..
Yeah BasementGrwoer nailed it. It all depends on how your greenhouse is set up. If you have lights and heat you can extend the season indefinitely. Even just a coldframe should be able to extend your season several weeks.