Among my 6 ladies, legal in San Diego, are 2 GG4 plants from feminized seeds, one in a 15 gal pot that does not have access to the earth, the other in the ground, both the best sunny locations and treated with organic love. Both GG ladies are nearly, amazingly, spherical. This, and the incredibly dense profusion inspired a volume (final size?) comparison. The potted plant (r=13, v=9203 c in) was less than 1/5th the volume of the plant in ground. Both are gorgeous, thriving and were treated as similarly as possible. (Watering becomes necessarily different as one waters more on a greater periphery than one can if held back by pot size constrictions.) My other plants are land race indices 4-5 ft in height and roughly cone shaped (but too rough for any approximations. Except realize this, that 3 cones are necessary to fill up a single sphere of comparable height. It appears that the more spherical your plant, the better harvest to anticipate.