Last verified: March 2026
Recreational Possession Limits (Adults 21+)
Under the RI Cannabis Act, adults 21 and older have two sets of possession limits — one for public carry and one for home storage:
| Location | Product Type | Limit |
|---|---|---|
| In Public | Flower (dried cannabis) | 1 ounce (28.35 grams) |
| Concentrates (wax, shatter, oil, etc.) | 5 grams | |
| At Home | Flower (total stored) | 10 ounces |
The home storage limit of 10 ounces is notably generous compared to most states. Rhode Island recognizes that home growers (3 mature plants are allowed) may need to store harvested material, and the 10-ounce limit accommodates this.
Per-Transaction Purchase Limits
In addition to possession limits, Rhode Island caps what you can buy in a single dispensary transaction:
| Product Type | Per-Transaction Limit |
|---|---|
| Flower | 1 ounce (28.35 grams) |
| Concentrates | 7.7 grams |
| THC-infused edibles | 830mg total THC |
Note the asymmetry: you can buy up to 7.7g of concentrate per transaction, but you can only carry 5g in public. Plan accordingly — if you purchase the full 7.7g, transport it directly home.
Rhode Island lets you purchase 7.7g of concentrate per transaction but only possess 5g in public. If you buy more than 5g, go straight home. Getting stopped in public with 7.7g of concentrate technically exceeds the public carry limit.
Medical Patient Possession Limits
Registered medical marijuana patients in Rhode Island receive significantly higher allotments:
| Category | Limit |
|---|---|
| Possession per 15-day period | 2.5 ounces |
| Home cultivation (with plant tags) | 12 mature + 12 immature plants |
Medical patients must carry their valid Rhode Island medical marijuana card and a government-issued photo ID. The 15-day purchase cycle is tracked through the state's compassion center point-of-sale system.
Recreational vs. Medical: Side-by-Side
| Feature | Recreational | Medical |
|---|---|---|
| Public carry (flower) | 1 oz | 2.5 oz per 15 days |
| Home storage | 10 oz | No separate cap specified |
| Home cultivation | 3 mature + 3 immature | 12 mature + 12 immature (with plant tags) |
| Tax rate | 20% (10% excise + 7% sales + 3% local) | Exempt from excise tax |
| Employment protection | Yes (off-duty use) | Yes (patient status) |
| DUI defense | None (zero-tolerance per se) | Exempt from metabolite-only charges |
Adult Sharing Is Legal
Rhode Island law permits adults 21+ to share cannabis with other adults, provided that no money, goods, or services are exchanged. You can pass a joint at a private gathering or give a friend some flower. But any exchange of compensation crosses into unlicensed distribution territory.
Home Storage Rules
The 10-ounce home storage limit comes with requirements:
- Cannabis must be stored in a secure, locked area not accessible to persons under 21.
- The storage area should not be visible from any public area or neighboring property.
- Harvest from home-grown plants counts toward the 10-ounce storage limit.
Failure to properly secure home-stored cannabis can result in civil penalties, especially if minors gain access.
For in-depth cannabis education, dosing guides, safety information, and research summaries, visit our partner site TryCannabis.org