Jack Herer (Indoor) These world famous seeds are a must for every serious grower. A multiple cup winner. Very high T.H.C. level. Irresistibly good weed! Plant Height: Tall; Mostly Sativa Buzz Type: Great Sativa High, Cerebral Buzz T.H.C. Level: High; 15-20% Weeks Flowering : 9-11 Yield (Dried grams per square meter in a Sea of Green): 350-450 Harvest Month: October