420 Events in Massachusetts in 2023

As our cannabis community gears up for another year of 420 celebrations, Happy Valley is here to make sure you are in the know of all the major marijuana events. From the 420 Pottery Party to Boston Cannabis Week, 2023 is surely shaping up to be a wickedly unforgettable year for 420 events in Massachusetts!  


April 20, 2023

Gloucester Dispensary: 420 Hours

8:00 am – 10:00 pm

East Boston Dispensary: 420 Hours

8:00 am – 9:00 pm

Happy Valley’s 420 Schedule

Join us at Happy Valley on 420 to celebrate the day with product spotlights, exclusive giveaways, incredible doorbuster deals, free food and coffee (while supplies last), and so much more. 

Gloucester Dispensary: Food Truck Schedule 

  • Grettel Café Du Flor – Serving coffee from 8am-12pm.
  • Rhea Pizza – Serving pizza from 1-5pm.

East Boston Dispensary: Food Truck Schedule 

  • Espresso Dave’s – Serving coffee from 8am-12pm.
  • Papi’s Stuffed Sopapillas – Serving sopapillas from 4-7pm.

Happy Valley’s 420 Giveaways

Every customer who comes into a Happy Valley store on 420 will receive an opportunity to pull from the giveaway bucket for a chance to win…

  • Tickets to the next Big Night Show (East Boston Only).
  • Tickets to The Wailers at The Cabot Theater on Friday, April 21st (Gloucester only).
  • Future use coupons to use on your favorite flower ranging from $5-100. 



Schedule a tour

For those looking for an adventure through the city, Boston Cannabis Tours brings cannabis sight-seeing tours throughout the Greater Boston Area. These guided tours feature stops at various dispensaries, cannabis grow facilities, Boston-based restaurants, and beyond. Boston Cannabis Tours are owned and operated by Massachusetts natives with the mission to build the cannabis community in the newly legalized Massachusetts cannabis industry.


April 15, 2023 – From 8:30-10:30pm EDT

420 Loft Boston 

Private 420-friendly & BYOB loft in Downtown Boston

Note: Address will be released via email 24 hours prior to the show

Get tickets

Good Luck Comedy is known for bringing together talented comics and musicians each month for an unforgettable evening. Don’t miss out on their 420 event featuring comedy from Sureni Weerasekera (Sketch Fest), music by Dj Black Biff, and more special guests.

Weed Science, Weed Law

April 18, 2023 – From 7-8pm EDT

Brookline Booksmith

279 Harvard Street 

Brookline, MA 02446

At this free event, attendees will have a chance to hear leading experts Jay Wexler and Dr. Peter Grinspoon on cannabis policies and science. Check out more event details here.


April 20, 2023 – From 6-9pm EDT

Harpoon Brewery 

306 Northern Avenue 

Boston, MA 02210

Get tickets

Ever wanted to create your own pipe? Now’s your chance! With this 420 Pottery Party hosted by Pottery with a Purpose you will have the opportunity to design, build, and paint your own pipe that will be fully functional once it gets baked.  


April 20, 2023 – From 8-10pm EDT

Bone Up Brewing Co. 

38 Norman Street 

Everett, MA 02149

Get tickets

Think you know all things cannabis? Now’s your chance to show it off! Test your skills at Stoner Trivia at Bone Up Brewing Co. where they will cover a range of 420-friendly topics from cultivation and legalization to pop culture and movie references. 


April 20, 2023 – From 10-11pm EDT

Improv Asylum

216 Hanover St 

Boston, MA, 02113

Get tickets 

What’s better than live improv on 420? Join Improv Asylum for a night full of laughs, guests, musical acts, and more during their late night talk show style comedy show. 

Dinner at Mary’s 4/20 Canna Comedy & Band Bash

April 20, 2023 – Doors at 7pm EDT

Diaspora Private Club

33 Dunster Street

Cambridge, MA, 02138

Get tickets 

Get your laughs from Good Luck Comedy then stick around for some jams by Boey Russel & Co. 


April 22, 2023 – From 1-5pm EDT

Zen Studios

76 Winn Street 

Woburn, MA 01801

Get tickets

Extend your 420 celebrations well into the weekend with a morning of “munchies and mimosas” at Zen Studios recording studio. Tickets will include brunchy bites but don’t forget to BYOB (Bring Your Own Bud)!

Sensi Sessions Cannabis Industry Networking Event

April 25, 2023 – From 7-11pm EDT

Electric Haze

25 Millbury Street

Worcester, MA, 01610

Free live music and the chance to connect with cannabis connoisseurs alike! More event details can be found here.


July 7-9, 2023

Marshfield Fairgrounds

140 Main Street

Marshfield, MA 02050

Get tickets

Since 2013, Levitate Music & Arts Festival has been a three-day music and arts festival on the historic Marshfield Fairgrounds. This festival was conceived in a surf shop basement, and has grown from humble beginnings to an extravaganza of culture and aesthetics. This year’s musical lineup features Brandi Carlile, Trey Anastasio, Stick Figure, Goose, Ziggy Marley, and dozens more. 


August 18-19, 2023

Spencer Fairgrounds

48 Smithville Rd

Spencer, MA 01562

Get tickets

With live performances by artists like Pepper and The Movement, the 2023 Terptown Throwdown promises an array of unforgettable experiences including art, education, vendors, networking, and more for cannabis connoisseurs and “canna-curious” alike. 


September 18-24, 2023

Times and location TBD

Since 2019, Boston Cannabis Week has been New England’s foremost destination for cannabis professionals, consumers, and innovators. This week-long event focuses on cannabis education, business, innovation, wellness, culture, fashion, food, and beyond. Boston Cannabis Week creates 420-friendly programming that is both comprehensive and inclusive.


March 2024

Times and location TBD

Get tickets

Since 2014, the New England Cannabis Convention (NECANN) events have been mainstays of the Massachusetts cannabis industry. NECANN’s convention is one of the nation’s biggest attractions for cannabis, hemp, medical, and CBD industry professionals, and welcomes consumers, patients, vendors, cannabis professionals, entrepreneurs, cultivators and investors.


As it currently stands, public use of cannabis in Massachusetts is illegal. Users can possess up to an ounce of cannabis on their person, but combusting, inhaling, eating, drinking, or vaping cannabis is prohibited in public places. That said, hosting members-only events, private events, and events that require a ticket may have their own cannabis-friendly rules and are subject to a legal loophole. Before using cannabis at any event, be sure to research the cannabis policy to ensure you are not breaking any laws, and that the host tolerates the use of cannabis. 76% of cannabis events are consumption-free, and support cannabis education, entrepreneurialism, and culture. 


If you’re curious about cannabis events happening in and around the Boston-area, ask your Happy Valley Host at our East Boston dispensary. We stay up-to-date on local 420 events and opportunities to inform and educate the public. Join our mailing list by filling out the form at the bottom of the page for cultural cannabis developments, 420 deals, helpful resources, and beyond. 

To sign up, scroll down to the bottom of this page and enter your email address at the prompt in the Stay Connected section. For more information on cannabis-themed activities in Boston, visit our Boston Cannabis Tourism Guide. If you’re flying into Boston through the Boston Logan International Airport, our East Boston dispensary offers premium recreational and medical cannabis products.

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Gloucester & East Boston

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