I know some folks who get 4 lbs average of bud per plant and some have up to 7 lbs on one plant. It is purple kush that has been cloned for years. The plants are all large clone mothers when put out the last week of may. The holes are 5 feet deep and 5 feet in diameter and filled with Fox Farms products and soil that has been thouroughly ammended. One particular guy can get up to 10 lbs of buds from one plant to the chagrin of others trying to replicate the feat. So 4 lbs of dried buds per plant is attainable but you need a huge root ball thus the large hole and lots of water. Up to 30 gallons a day per plant.