60 to 70 days (9–10 weeks) indoors 
Outdoor plants usually finish by late October
 
Chemdawg 91 (Chem '91) is an intermediate to advanced hybrid with strong, sativa-like stretching. It requires a warm, dry environment and a 9 to 10-week flowering time. Growers must utilize heavy pruning and trellising to manage its height and support its famously dense, pungent buds