G13 is a very strong Indica strain, which is the subject of many urban legends. Some believe the CIA, FBI, and other agencies were involved in part of a government project involving G13. This is not a strain for the inexperienced or new consumer. Look for hunger, and paranoia, to join the high for some.
This strain can be grown both indoors and outdoors, the average flowering period is approximately 9-10 weeks indoors, and towards the end of October outdoors.