Originally Posted by veggiegardener
Keep in mind that soil mass isn't the only controlling factor. Area is also very important. Depending on strain and grower, most plants produce between 30 and 60 grams sq/ft. So...
453.6 divided by 30 = 15.12 sq/ft. or a diameter of a bit more than four feet for one lb.
A heavy producer like Romulan may approach 60 grams sq/ft, or 7.56 sq./ft. Or slightly less than a three foot diameter.
Outdoors, most strains will need the larger area.