budding depends on the strain and when it's supposed to end...some plants cn start budding wit as little as 9 hours of darkness and in michigan thats end of july my plants started to flower last week and right now we have about 9.5 hours of darkness outside, oter plants may need 10-12 hours typicy most plants will start to flower mid-late august and be done mid-end of oct, tho in MI you'll want your plants done by end of sept...october is just far too wet and cold mold starts to hit really bad like green dave said hit the "michigan growers tell your plans" thread for more info and up to date stuff for MI