How much cannabis can I possess in Rhode Island with an MMJ card?

You can possess the following amounts with a valid Rhode Island MMJ card:

• Possession Limit (Flower): 2.5 oz. on-person. Up to 10 ounces on one's own property, residential or non-residential.
• Possession Limit (Concentrate): 1 gram concentrate = 3.3 grams flower. This suggests a possession limit of just over 1 oz. of concentrate.

A medical marijuana patient or caregiver can grow up to 12 mature plants or 12 seedlings. Two or more cardholders may cooperatively cultivate marijuana in residential or non-residential locations subject to the following restrictions:

Non-residential - no more than 10 ounces of usable marijuana, 48 mature marijuana plants, and 48 seedlings.

Residential - no more than 10 ounces of usable marijuana, 24 mature marijuana plants, and 24 seedlings.