yes some sativas will most certainly yield that much dry. only one harvest a year outdoor though. my neighbor in socal years ago had sativas planted directly in the ground that were literally small tree/bushes that actually became a problem because of height. they had direct sun light all day and good conditions and care. the circumfrence of the main stems were many inches. and he would have huge annual yields dont know what strain exactly though this was a few years ago. i wish i could do out and indoor grows now oh well.