Legal Recreational Marijuana States and DC
Cannabis Laws with Possession and Cultivation Limits






State
Year
How Passed
Possession Limits
1.Alaska
2014
Ballot Measure 2 (53%)
1 oz usable; 6 plants (no more than 3 mature)
2.California
2016
Proposition 64 (57%)
1 oz usable; 6 plants; 8 g hash/concentrates
3.Colorado
2012
Amendment 64 (55%)
1 oz usable; 6 plants (no more than 3 mature); 1 oz hash/concentrates
District of Columbia
2014
Initiative 71 (65%)
2 oz usable; 6 plants (no more than 3 mature)
4.Maine
2016
Question 1 (50%)
2.5 oz usable; up to 15 plants (no more than 3 mature); 5 g hash/concentrates
5.Massachusetts
2016
Question 4 (54%)
1 oz usable; 6 plants; 5 g concentrates
6.Michigan
2018
Proposal 1 (56%)
2.5 oz usable; 12 plants; 15 g concentrates
7.Nevada
2016
Question 2 (54%)
1 oz usable; 6 plants; 3.5 g hash/concentrates
8.Oregon


2014
Measure 91 (56%)
1 oz usable in public; 8 oz homegrown usable at home; 4 plants; 16 oz solid marijuana-infused, 72 oz liquid infused, and 1 oz extract at home of hash/concentrates
9.Vermont
2018
Legislative Bill H.511
1 oz usable; 6 plants (no more than 2 mature); 5 g hash
10.Washington
2012
Initiative 502 (56%)
1 oz usable; 16 oz solid marijuana-infused, 72 oz liquid infused, and 7 g of concentrates
Recreational Marijuana State Laws – Summary Chart from ProCon.org

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1.Alaska
State Marijuana Laws

Ballot Measure: Ballot Measure 2 -- Approved Nov. 4, 2014 by 53% of voters

Law: Alaska Statute Chapter 17.38: The Regulation of Marijuana

State Website: Alaska Alcohol and Marijuana Control Office

Effective: Feb. 24, 2015

Alaska Medical Marijuana Laws:
The possession limits for medical marijuana patients are the same as the limits for adult users.

Possession and Cultivation Limits

Age: 21+

Usable Marijuana: up to 1 oz

Plants: up to 6 plants with no more than 3 mature plants

Hash & Concentrates: Possession of hash and concentrates is illegal. Possession of up to 3 g is a misdemeanor, more is a felony.


2.California
State Marijuana Laws

Ballot Measure: Proposition 64: The Adult Use Marijuana Act -- Approved Nov. 9, 2016 by 57% of voters

Law: Control, Regulate and Tax Adult Use of Marijuana Act

State Website: California Cannabis Portal

Effective: Nov. 9, 2016 (revised penalties); Jan. 1, 2018 (retail sales); 2023 (restrictions to be lifted on large-scale corporations)

California Medical Marijuana Laws:
Medical cannabis patients are not subject to the limits of the recreational law and may possess up to 8 oz usable marijuana, and 6 mature or 12 immature plants.

Possession and Cultivation Limits

Age: 21+

Usable Marijuana: up to 1 oz

Plants: up to 6 plants, including the harvest from those 6 plants

Hash & Concentrates: up to 8 g (more than 8 g is a misdemeanor)


3.Colorado
State Marijuana Laws

Ballot Measure: Amendment 64 (55%) -- Approved Nov. 6, 2012 by 55% of voters

Law: Colorado Constitution: Article 18, section 16

State Website: Colorado Marijuana

Effective: Dec. 10, 2012 (revised penalties) Jan. 1, 2014 (commercial sales)

Colorado Medical Marijuana Laws:
Medical cannabis patients are not subject to the limits of the recreational law and may possess up to 2 oz usable marijuana, and 6 plants (3 mature and 3 immature).

Possession and Cultivation Limits

Age: 21+

Usable Marijuana: up to 1 oz

Plants: up to 6 plants with no more than 3 mature plants

Hash & Concentrates: up to 1 oz


District of Columbia
State Marijuana Laws

Ballot Measure: Initiative 71 -- Approved Nov. 4, 2014 by 64.87% of voters

Law: Marijuana Legalization and Regulation Act of 2015

DC Website: DC Metro Police Department

Effective: Feb. 26, 2015

Retail sales are not allowed

DC Medical Marijuana Laws:
Medical cannabis patients are not subject to the limits of the recreational law and may possess up to 2 oz dried marijuana

Possession and Cultivation Limits

Age: 21+

Usable Marijuana: up to 2 oz

Plants: up to 6 plants per person with no more than 3 mature plants; up to 12 plants (no more than 6 mature) for a single residence with more than one 21+ resident

Hash & Concentrates: Possession of hash and concentrates is illegal and punishable with 180 days in jail and a $1,000 fine.


4.Maine
State Marijuana Laws

Ballot Measure: Question 1 -- Approved Dec. 17, 2016 (after recount of Nov. 8, 2016 election results was abandoned) by 50.26% of voters

Law: The Marijuana Legalization Act

Effective: Jan. 30, 2017 (grow and possess)

[Editor's Note: On May 2, 2018, the Maine House (109-39) and Senate (28-6) voted to override Gov. Paul LePage's veto of LD 1719 (Chapter 409 Public Law). The Department of Adminstration and Financial Services is required to present regulatory rules for legal sale and production of marijuana to the legislature in January 2019; marijuana retail shops are expected to open no sooner than Spring 2019. The bill lowers the recreational marijuana possession limits from 6 mature plants to 3 mature plants.]

Maine Medical Marijuana Laws:
Medical cannabis patients are not subject to the limits of the recreational law and may possess up to 2.5 oz marijuana and 6 plants.

Possession and Cultivation Limits

Age: 21+

Usable Marijuana: up to 2.5 oz

Plants: up to 3 flowering plants, 12 immature plants, unlimited seedlings, and all marijuana produced from the plants

Hash & Concentrates: up to 5 g


5.Massachusetts
State Marijuana Laws

Ballot Measure: Question 4 -- Approved Nov. 8, 2016 by 53.66% of voters

Law: Regulation and Taxation of Marijuana Act

State Website: Massachusetts Cannabis Control Commission

Effective: Dec. 15, 2015

Massachusetts Medical Marijuana Laws:
Medical cannabis patients are not subject to the limits of the recreational law and may possess up to 10 oz (a 60-day personal supply).

Possession and Cultivation Limits

Age: 21+

Usable Marijuana: up to 1 oz

Plants: up to 6 plants; no single residence may exceed 12 plants

Hash & Concentrates: up to 5 g. Possession of hash is illegal though decriminalized for possession of up to 1 oz.


6.Michigan
State Marijuana Laws

Ballot Measure: Proposal 1 -- Approved Nov. 6, 2018 by 56% of voters

State Website: Michigan Department of Licensing and Regulatory Affairs (LARA)

Effective: Unspecified, likely in Dec. 2018

Michigan Medical Marijuana Laws:
Medical cannabis patients may possess up to 2.5 ounces of usable marijuana and twelve marijuana plants kept in an enclosed, locked facility.

Possession and Cultivation Limits

Age: 21+

Usable Marijuana: 2.5 oz; up to 10 ounces at home, but amounts over 2.5 ounces must be kept in locked containers

Plants: up to 12 plants

Hash & Concentrates: 15 grams of marijuana may be in the form of marijuana concentrate


7.Nevada
State Marijuana Laws

Ballot Measure: Question 2 -- Approved Nov. 8, 2016 by 54.47% of voters

Law: Nevada Revised Statutes, Chapter 453D - Regulation and Taxation of Marijuana

State Website: Marijuana in Nevada

Effective: Jan. 1, 2017

Nevada Medical Marijuana Laws:
Medical cannabis patients are not subject to the limits of the adult-use law and may possess up to 2.5 oz of usable marijuana and 12 plants.

Possession and Cultivation Limits

Age: 21+

Usable Marijuana: up to 1 oz

Plants: up to 6 plants; no single residence may exceed 12 plants

Hash & Concentrates: up to 3.5 g


8.Oregon
State Marijuana Laws

Ballot Measure: Oregon Legalized Marijuana Inititative, Measure 91 -- Approved Nov. 4, 2014 by 56.11% of voters

Law: Oregon Revised Statutes Chapter 475B - Cannabis Regulation: Recreational Use of Cannabis

State Website:Oregon Recreational Marijuana

Effective: Mar. 29, 2016

Oregon Medical Marijuana Laws:
Medical cannabis patients are not subject to the limits of the adult-use law and may possess up to 24 oz of usable marijuana and 24 plants (6 mature and 18 immature).

Possession and Cultivation Limits

Age: 21+

Usable Marijuana: up to 1 oz in public; up to 8 oz homegrown at home

Plants: up to 4 plants per residence

Hash & Concentrates: up to 16 oz solid infused at home; up to 72 oz liquid infused at home; up to 1 oz extract at home


9.Vermont
State Marijuana Laws

Legislative Bill: H.511 -- Approved Jan. 22, 2018

Law: An Act Related to Eliminating Penalties for Possession of Limited Amounts of Marijuana by Adults 21 Years of Age or Older

State Website:State of Vermont Marijuana Commission

Effective: July 1, 2018

Retail sales are not allowed

Vermont Medical Marijuana Laws:
Medical cannabis patients are not subject to the limits of the adult-use law and may possess up to two mature plants, seven immature plants, and 2 oz of usable marijuana.

Possession and Cultivation Limits

Age: 21+

Usable Marijuana: up to 1 oz

Plants: up to 6 plants per household (no more than 2 mature), and all marijuana produced from the plants

Hash & Concentrates: 5 g


10.Washington
State Marijuana Laws

Ballot Measure: Washington Marijuana Legalization and Regulation, Inititative 502 -- Approved Nov. 6, 2012 by 55.7% of voters

Law: Revisions to the Uniform Controlled Substances Act, chapter 69.50

State Website: Washington State Liquor and Cannabis Board

Effective: Dec. 6, 2012

Washington Medical Marijuana Laws:
Medical cannabis patients are not subject to the limits of the adult-use law and may possess up to 3 oz usable marijuana; 48 oz of marijuana-infused product in solid form; or 216 oz marijuana-infused liquid; 21 g concentrate; 6 plants for personal use and up to 8 oz from those plants .

Possession and Cultivation Limits

Age: 21+

Usable Marijuana: up to 1 oz

Plants: Plants are illegal. Any amount is a felony.

Hash & Concentrates: up to 16 oz marijuana-infused product in solid form; up to 72 oz marijuana-infused product in liquid form; up to 7 g marijuana concentrate





Sources:

Ballotpedia, "Alaska Marijuana Legalization, Ballot Measure 2 (2014)," ballotpedia.org (accessed Nov. 14, 2017)

Ballotpedia, "California Proposition 64, Marijuana Legalization (2016)," ballotpedia.org (accessed Nov. 14, 2017)

Ballotpedia, "Colorado Marijuana Legalization Initiative, Amendment 64 (2012)," ballotpedia.org (accessed Mar. 29, 2017)

Ballotpedia, "Washington D.C. Marijuana Legalization, Initiative 71 (November 2014)," ballotpedia.org (accessed Mar. 29, 2017)

Ballotpedia, "Maine Marijuana Legalization, Question 1 (2016)," ballotpedia.org (accessed Mar. 30, 2017)

Ballotpedia, "Massachusetts Marijuana Legalization, Question 4 (2016)," ballotpedia.org (accessed Mar. 31, 2017)

Ballotpedia, "Michigan Proposal 1, Marijuana Legalization Initiative (2018)," ballotpedia.org (accessed Nov. 7, 2018)

Ballotpedia, "Nevada Marijuana Legalization, Question 2 (2016)," ballotpedia.org (accessed Apr. 3, 2017)

Ballotpedia, "Oregon Legalized Marijuana Initiative, Measure 91 (2014)," ballotpedia.org (accessed Apr. 3, 2017)

Ballotpedia, "Washington Marijuana Legalization and Regulation, Initiative 502 (2012)," ballotpedia.org (accessed Apr. 3, 2017)

Maine State Legislature, "Recreational Marijuana in Maine," legislature.maine.gov (accessed Feb. 12, 2018)

Marijuana Policy Project, "Maine," mpp.org (accessed Feb. 12, 2018)

NORML, "State Laws," norml.org/laws (accessed Mar. 16, 2017)

University of Missouri at Kansas City, "Irwin Ravin, Petitioner, v. State of Alaska, Respondent," law2.umkc.edu, May 27, 1975