Is Weed Legal in Delaware? Limits, Penalties, and Expungement

Yes, weed is legal in Delaware for adults 21 and older. Licensed recreational sales opened on August 1, 2025, and you can possess up to one ounce of cannabis flower bought from a state-licensed dispensary.¹ Public use, home growing, and driving while impaired are still illegal, and penalties for crossing those lines range from small civil fines to felony charges.

Who Can Buy and How Much

You have to be 21 to buy, possess, or use recreational marijuana. Retailers check ID before every sale, and giving or selling to anyone under 21 is illegal.² The one exception is the Medical Marijuana Program, which lets patients qualify at 18, or younger with parental consent, through a practitioner certification and a registry card.³

Delaware sets a separate “personal use quantity” for each product type:⁴

Cannabis flower: up to 1 ounce (28.35 grams)
Concentrated cannabis: up to 12 grams
Cannabis products such as edibles or tinctures: up to 750 milligrams of delta-9-THC

Those are either/or limits for what you can carry, not a combined ceiling. Growing your own is not an option in Delaware. All plant production is restricted to licensed cultivation centers, so anything you legally possess has to come from a licensed dispensary.⁴

Where You Can Use It

Public consumption is illegal, and the state’s definition of “public” is wider than most people realize. It covers sidewalks, streets, parking lots, parks, playgrounds, stores, restaurants, and any spot within 10 feet of those places or within 10 feet of building entrances, exits, operable windows, or ventilation intakes.⁵ Stepping just outside a doorway to smoke is where a lot of violations happen. Public consumption is an unclassified misdemeanor carrying up to a $200 fine and up to 5 days in jail.⁶

Legal places to use it are private residences or other non-public spaces with the property owner’s permission. Delaware has not authorized cannabis lounges or any other public consumption venue.

Using marijuana while driving is its own offense, separate from DUI. A first violation carries a fine of $25 to $200. Repeat offenses within a year run $50 to $400.⁷ When you’re transporting marijuana, keep it sealed and out of reach so an officer has no reason to suspect you were consuming it.

Buying It Legally

The Office of the Marijuana Commissioner oversees the recreational market and issues licenses for retailers, cultivators, product manufacturers, and testing labs.⁸ Purchases have to be made in person at a licensed dispensary. Recreational customers don’t need a state card; a valid ID showing you’re 21 or older is enough.

Every recreational purchase carries a 15% excise tax on the retail price. Medical marijuana is exempt.⁹

Federal Land and State Lines

Delaware’s law has no effect on federal property. Marijuana is still illegal under federal law, which controls every military installation, national wildlife refuge, and federal building in the state. Dover Air Force Base, for example, prohibits all marijuana products on base, including in base housing, regardless of Delaware law. Active-duty military members and Department of Defense civilians are barred from using marijuana on or off base.¹⁰

Carrying marijuana across state lines is a federal crime, even when both states have legalized recreational use. Airports are federal jurisdiction too, so flying with marijuana out of any Delaware airport exposes you to federal drug charges.

Penalties for Crossing the Lines

Possession Over the Limit

Carrying more than the personal use quantity, but below commercial thresholds, is an unclassified misdemeanor with a fine of up to $575 and up to 3 months in jail.⁶ Larger amounts trigger tiered trafficking felonies, starting at 175 grams.⁵

Underage Possession

Someone under 21 caught with a personal use quantity gets a $100 civil penalty for a first offense and $200 to $500 for a second. A third or later violation becomes an unclassified misdemeanor with a $100 fine.⁶

Unlicensed Sale or Cultivation

Growing, manufacturing, or selling marijuana without a state license is still illegal under the legalization framework. Delivering or possessing with intent to deliver is a class D felony under the state’s controlled substances laws, and the charge rises to class C at 1,500 grams and class B at 5,000 grams.⁵ Unlicensed selling is prosecuted as drug dealing, not a minor regulatory issue.

Driving Under the Influence

Marijuana DUI is charged under Delaware’s general DUI statute. There is no per se THC blood level equivalent to alcohol’s .08 threshold, so prosecutors rely on officer observations, field sobriety tests, and drug recognition expert evaluations to prove impairment. A first conviction carries a fine of $500 to $1,500 and up to 12 months in jail, though the jail time can be suspended. Repeat offenses bring mandatory minimums, longer license suspensions, and required drug education or rehabilitation.¹¹

Your Job Is Not Protected

Legalization does not override an employer’s right to run a drug-free workplace. Delaware employers can prohibit marijuana use and drug test, including pre-employment and post-accident screens. Losing a job over a positive marijuana test is still a real possibility.

The exposure is higher in regulated industries. Federal contractors under the Drug-Free Workplace Act have to keep zero-tolerance policies, and Department of Transportation regulations require ongoing marijuana testing for safety-sensitive positions such as commercial truck drivers and pipeline workers. A DOT compliance notice issued in late 2025 confirmed that DOT drug testing procedures stay the same regardless of state legalization or any potential federal rescheduling.

Clearing an Old Marijuana Conviction

If you were convicted of possessing marijuana under Section 4764 of Title 16 or possessing drug paraphernalia under Section 4771, you qualify for mandatory expungement. Once you submit the request to the State Bureau of Identification, the Bureau has to expunge the record; a judge does not weigh factors or use discretion. This works even if you have other, ineligible convictions on your record, as long as every charge in that particular case qualifies.¹²

For marijuana convictions that don’t qualify for mandatory expungement, a gubernatorial pardon is the other route. A pardon doesn’t erase the conviction, but it removes legal disabilities attached to it, such as barriers to professional licensing or public employment. The state has signaled a priority for reviewing applications from people with nonviolent marijuana convictions.

1
State of Delaware. Delaware to Launch Adult-Use Marijuana on August 1
2
Delaware Code Online. Delaware Code Title 4 Chapter 13 – The Delaware Marijuana Control Act
3
Office of the Marijuana Commissioner. Office of the Marijuana Commissioner – Medical Marijuana Application Process
4
Office of the Marijuana Commissioner. Office of the Marijuana Commissioner – Frequently Asked Questions
5
Delaware Code Online. Delaware Code Title 16 Chapter 47 – Uniform Controlled Substances Act
6
Justia. Delaware Code Title 16 4764 – Possession of Marijuana; Class B Misdemeanor, Unclassified Misdemeanor, or Civil Violation
7
Delaware General Assembly. Delaware General Assembly – HB469
8
Office of the Marijuana Commissioner. Office of the Marijuana Commissioner – Adult-Use
9
Delaware Code Online. Delaware Code Title 4 Chapter 13 – Marijuana Regulation Fund
10
DVIDS. Marijuana Laws Change in Delaware, Dover AFB DDRP Encourage Smart Choices, Extra Vigilance
11
Justia. Delaware Code Title 21 4177 – Driving a Vehicle While Under the Influence or With a Prohibited Alcohol or Drug Content
12
Justia. Delaware Code Title 11 4373 – Mandatory Expungement; Application Through SBI