The flowering period for Chem de la Chem might last anywhere from seven to nine weeks on average. Outdoor cultivation of the Chem de la Chem variety is possible if you live in a warm, dry climate with a low risk of frost. This is the only environment in which it is likely to thrive. When grown outside, it has the potential to yield up to 15 ounces of cannabis when it is harvested around the middle of October.