Different states have laws that are vastly different. Some states allow growing, some do not.
What is allowed: see below list
1 oz usable; 6 plants (3 mature, 3 immature
2.5 oz usable; 0-12 plants
8 oz usable; 6 mature or 1 2 immature plants
2 oz usable; 6 plants (3 mature, 3 immature)
DC 2 oz dried; limits on other forms to be determined
6 oz usable
3 oz usable; 7 plants (3 mature, 4 immature
2.5 oz usable; 6 plants
2.5 oz usable; 12 plants
1 oz usable; 4 plants (mature); 12 seedlings
1 oz usable; 7 plants (3 mature, 4 immature
2 oz usable
6 oz usable; 16 plants (4 mature, 12 immature
oz usable; 24 plants (6 mature, 18 immature
[top]Rhode Island
2.5 oz usable; 12 plants
2 oz usable; 9 plants (2 mature, 7 immature
24 oz usable; 15 plants