What is the Big Bud strain yield? 12 to 20 ounces per square meter indoors and up to 25 ounces per plant outdoors. How much THC does Big Bud strain have? From 15% to 26% What are the origins of the Big Bud strain? Big Bud's exact origin is unknown, but it is widely believed to come from a cross between Afghani , Northern Lights, and Skunk No. 1.