Hawaiʻi Medical Cannabis Laws

Growing & Possession Guidelines for Registered 329 Patients

Possession

Patients and caregivers may possess up to 4 ounces of usable cannabis at any time.
“Usable cannabis” includes flower, oils, and manufactured products. Seeds, stalks, and roots are excluded.
Transport cannabis only in a sealed container that is not visible to the public.
Inter-island transport of cannabis is prohibited.

Always keep a printed or digital copy of your valid 329 Card with you when in possession of medical cannabis.

Growing

Registered patients and caregivers may grow up to 10 cannabis plants total, mature or immature.
Each plant must display a tag showing the 329 registration number and card expiration date.
The grow site must be declared on your DOH application and limited to one location per registration.
Plants must be grown in a secured, enclosed area not visible to the public or accessible to unauthorized persons.
Caregivers may cultivate for their registered patients within these same limits.

Questions about registering a grow site or updating your tag information? Call Greener Healing Ways at (808) 889-1822.

Tagging Medical Cannabis Plants in Hawaiʻi

The Importance of Proper Tagging

At Greener Healing Ways, we want our patients to stay fully informed and compliant with Hawaiʻi’s medical cannabis laws.
While our clinic does not participate in cultivation or tagging, we feel it’s important to understand the rules that apply to patients who choose to grow their own medicine.

Proper tagging protects you by clearly identifying your plants as part of the Hawaiʻi Medical Cannabis Registry Program. Tags provide proof that your plants are legal and registered, help prevent misunderstandings with law enforcement, and demonstrate that you’re following Department of Health (DOH) regulations.

What the State Requires

According to the Hawaiʻi Department of Health, all registered patients and caregivers who grow medical cannabis must follow these guidelines:

Every cannabis plant must have a legible identification tag attached directly to the plant.
Each tag must clearly display the 329 registration number and the expiration date of your medical cannabis card.
Tags must remain visible and easy to read at all times. Replace any tag that becomes damaged, faded, or illegible.
The grow site address listed on your application must match the physical location of your plants.

These requirements come directly from Hawaiʻi Administrative Rules HAR §11-160-31.

Why It Matters

Tagging your plants helps ensure that you remain compliant with state law and protects your right to grow.

It clearly shows that your cannabis is grown for personal medical use under a valid 329 registration.
It helps prevent confusion or potential penalties if your grow site is ever inspected.
It reflects your commitment to cultivating responsibly and within legal limits.

Key Reminders

You and your caregiver (if applicable) may grow up to 10 cannabis plants total, mature or immature.
The total usable cannabis (flower, oils, etc.) must not exceed 4 ounces at any time.
You may only grow at the address registered with the DOH.
Inter-island transport of cannabis is not permitted.

Stay Informed

For official information, visit the Hawaiʻi Medical Cannabis Registry at
👉 https://medmj.ehawaii.gov/medmj/welcome

Greener Healing Ways is here to help you stay educated, compliant, and confident in your medical cannabis journey.

Know the Laws: Growing & Possession in Hawaiʻi