They grow fast. The strains i picked were on the smaller end of production but all have done well n grow very fast most have started to flower sometime in the 3rd week. I've been LST on my autos so they all have a unique shape. Ill have some pix of some that got accidentally super topped and stressed n stalled for several weeks but now will produce way more. Honestly I choose autos now for the speed of restocking while my photo tent is flowering. The one in the photo is approximately 3ft high. I got 2oz off it. My gods gift is much smaller but the one I super topped is gonna be much bigger. Im still learning you can do lots with autos if ya not in a hurry