New England Cannabis Events Calendar

MassCann/NORML's long-running two-day rally and festival on Boston Common pairs cannabis law-reform advocacy with a vendor marketplace, food, and live entertainment. It is one of the oldest and largest cannabis gatherings in the region and draws a large general-public crowd from across New England. A strong fit for customers interested in cannabis culture and advocacy.

When

Friday, September 18, 2026 – Saturday, September 19, 2026 · 3:00 PM Fri / 12:00 PM Sat

Address

To be announced by the organizer

Run by

MassCann/NORML (Massachusetts Cannabis Reform Coalition)

Who’s there

Sponsors listed: Garden Remedies Cannabis and El Oso Security Services. Full vendor/speaker lineup not yet published.

Event page

Note: Friday hours 3-8pm, Saturday hours noon-8pm, per organizer site. Exact stage/vendor-area address within Boston Common not published; overall event is 2 days away from the verification date.

Listing checked against MassCann/NORML (official site) on 2026-09-17. Always confirm date, time and address with the organizer before you travel.

A public, open-session meeting of Rhode Island's cannabis regulator covering licensing and policy business. It's a civic/informational meeting rather than a retail event, most useful for customers or staff who follow RI cannabis regulation. The Commission meets on a recurring basis, roughly monthly.

When

Friday, September 18, 2026 · 1:00 PM

Address

560 Jefferson Boulevard, Warwick, RI 02886

Run by

Rhode Island Cannabis Control Commission

Event page

Note: The Commission's own site states meeting dates are 'tentative and subject to cancellation or modification on short notice' and advises calling 401-921-3010 to confirm before traveling. Listed as a representative example of a recurring series, not a one-off event.

Listing checked against Rhode Island Cannabis Control Commission (official site) on 2026-09-17. Always confirm date, time and address with the organizer before you travel.

A regular open meeting of the state's cannabis regulator, covering licensing, compliance, and policy agenda items. It is open to public viewing and comment via Microsoft Teams. Not a retail or festival-style event, but relevant to customers who follow Massachusetts cannabis policy.

When

Thursday, September 24, 2026 · 10:00 AM

Address

N/A - virtual meeting

Run by

Massachusetts Cannabis Control Commission

Event pageWhere we found it

Note: One of many recurring meetings (roughly twice monthly); further 2026 dates confirmed on the Commission's own calendar include Oct 8, Nov 12, and Dec 10. Listed here as a representative example rather than a one-off event.

Listing checked against Massachusetts Cannabis Control Commission (official site) on 2026-09-17. Always confirm date, time and address with the organizer before you travel.

Maine's largest agricultural fair, run by the state's organic farming association, with three days of gardening, homesteading, and growing-focused demonstrations and vendors alongside music, food, and animal exhibits. It leans soil/organic-farming rather than hydroponics-specific, but draws exactly the home-grower and cultivation-curious crowd a hydroponics retailer wants to reach, and is one of the largest general-public gatherings in Maine each year.

When

Friday, September 25, 2026 – Sunday, September 27, 2026

Address

294 Crosby Brook Road, Unity, ME 04988

Run by

Maine Organic Farmers and Gardeners Association (MOFGA)

Who’s there

1,000+ exhibitors and speakers across categories including gardening and homesteading, per the organizer.

Event page

Listing checked against MOFGA (official site) on 2026-09-17. Always confirm date, time and address with the organizer before you travel.

An annual golf tournament and networking day for the Massachusetts cannabis industry that draws 400+ operators, brands, and vendors. It is a B2B/industry networking event rather than a general-public draw, but is worth knowing about for industry-adjacent customers and staff.

When

Thursday, October 1, 2026

Address

801 Chocolog Rd, Uxbridge, MA 01569

Run by

Cannabis Creative Group

Who’s there

Sponsors include Needham Bank, Ethos Cannabis, STEM Haverhill, and Simply Herb; media partners The Bluntness and Sensi Magazine.

Event page

Note: Industry/trade event (21+, cannabis professionals); not a general-public retail event. A cannabis-events aggregator (Distru) separately lists a related 'TeeHC Experience 2026' on the same date.

Listing checked against TeeHC Open (official site) on 2026-09-17. Always confirm date, time and address with the organizer before you travel.

A hands-on greenhouse technology workshop covering structures, heating/cooling/ventilation, automation, and supplemental lighting for crop production, part of a new statewide UMaine Extension series for farmers, commercial growers, homesteaders, and hobby growers. This is squarely aimed at the controlled-environment/cultivation audience a hydroponics retailer serves.

When

Saturday, October 17, 2026

Address

105 Botanical Gardens Dr, Boothbay, ME 04537

Run by

University of Maine Cooperative Extension

Who’s there

Taught by Dr. Ankit Singh, UMaine Extension.

Event page

Note: Program has additional fall 2026 modules planned (construction, environmental management, growing systems, automation, water quality) but no further dates or locations were published as of verification - check the program page for updates.

Listing checked against University of Maine Cooperative Extension (official site) on 2026-09-17. Always confirm date, time and address with the organizer before you travel.

New England's largest cannabis competition and trade show, judging flower and products while running a consumer-facing expo floor with vendors, art, and glass-blowing exhibits. Held at Worcester's main arena, it draws both industry and enthusiast attendees from across the region and is a strong regional pick for a hydroponics/cannabis retailer's calendar.

When

Friday, November 13, 2026 – Saturday, November 14, 2026 · 12:00 PM Fri / 10:00 AM Sat

Address

50 Foster St, Worcester, MA 01608

Run by

The Harvest Cup, Inc.

Who’s there

Art gallery featuring Malcolm MacKinnon ("Dan Sky" of High Times); glass-blowing gallery with several well-known glassblowers.

Event page

Note: Friday 12-6pm, Saturday 10am-6pm. Full 2026 vendor/speaker list not yet published as of verification.

Listing checked against The Harvest Cup (official site) on 2026-09-17. Always confirm date, time and address with the organizer before you travel.

A large consumer flower and garden show in its 44th-plus year, filling the Hartford convention center with display gardens, plant and seed vendors, and gardening seminars. It's a general horticulture audience event rather than hydroponics- or cannabis-specific, but draws exactly the home-growing and plant-enthusiast crowd a hydroponics retailer wants to reach.

When

Thursday, February 18, 2027 – Sunday, February 21, 2027

Address

100 Columbus Blvd, Hartford, CT 06103

Run by

Northeast Expos

Event page

Note: General gardening show; could not confirm whether hydroponics/indoor-growing vendors will exhibit this edition.

Listing checked against Connecticut Flower and Garden Show (official site) on 2026-09-17. Always confirm date, time and address with the organizer before you travel.

Connecticut's established B2B/B2C cannabis expo, with exhibitor booths, education sessions, and a consumer-shopping component at a banquet-hall venue in Plantsville. It's the largest CT-specific cannabis trade event found for this window and a closer-to-home alternative to NECANN Boston for a Massachusetts-based retailer's Connecticut customers.

When

Saturday, February 27, 2027 – Sunday, February 28, 2027 · 10:00 AM Sat / 10:00 AM Sun

Address

556 Mulberry Street, Plantsville, CT 06479

Run by

XpoCanna

Event page

Note: The organizer's own page shows 'online ticket sales has ended' text alongside the 2027 dates, which reads like leftover copy from a prior cycle. An independent listings aggregator (Luminik.io) separately lists Feb 27-28, 2027 and computed 'about 5 months until it opens,' which matches today's date and supports the date being current - but confirm directly with the organizer before promoting heavily.

Listing checked against XpoCanna (official site) on 2026-09-17. Always confirm date, time and address with the organizer before you travel.

The flagship New England cannabis trade show returns to Boston's Hynes Convention Center, combining exhibitor booths, educational programming, and the NECANN Cup awards. It typically draws 9,000+ attendees and is the single biggest cannabis-industry event in the region, appealing to both trade and enthusiast attendees.

When

Friday, April 9, 2027 – Saturday, April 10, 2027 · 10:00 AM Fri / 10:00 AM Sat

Address

900 Boylston Street, Boston, MA 02115

Run by

NECANN

Who’s there

Organizer expects 300+ exhibitors and 60+ programming sessions; past editions have featured Ayr Wellness, Orange Photonics, and Urban-Gro.

Event page

Note: Friday 10am-5pm, Saturday 10am-4pm. General attendee registration was listed as 'coming soon' at verification. A secondary source (massachusettscannabis.org) incorrectly listed this event under '2026' - the organizer's own site is unambiguous about April 2027.

Listing checked against NECANN (official site) on 2026-09-17. Always confirm date, time and address with the organizer before you travel.

Rhode Island's largest home-and-garden consumer show now incorporates the former RI Spring Flower and Garden Show as its "RI Specialty Flower Show" and "Garden Experience" sections. It's a general home-improvement audience event, but the garden sections bring in serious home growers and landscapers - a reasonable general-gardening-crowd pick for a hydroponics retailer, though not hydroponics-specific.

When

Friday, April 9, 2027 – Sunday, April 11, 2027

Address

1 Sabin St, Providence, RI 02903

Run by

Rhode Island Builders Association

Event page

Note: The organizer's page did not itself repeat a street address; the address given here is the well-established Rhode Island Convention Center address at the city named by the organizer. Confirm the exact hall/entrance before publishing if precision matters.

Listing checked against Rhode Island Builders Association (official site) on 2026-09-17. Always confirm date, time and address with the organizer before you travel.

A B2B cannabis trade show for cultivators, processors, and retailers held at the Three County Fairgrounds in the Pioneer Valley. It focuses on industry networking and product sourcing rather than a consumer festival, so it's best suited to a hydroponics retailer's commercial/wholesale-facing audience rather than casual customers.

When

Wednesday, June 16, 2027 – Thursday, June 17, 2027

Address

111 Old Ferry Rd, Northampton, MA 01060

Run by

The Flower Expo

Event page

Note: A secondary source (massachusettscannabis.org) listed a conflicting June 2026 date for what appears to be the same event; the organizer's own site clearly states June 16-17, 2027, which is used here.

Listing checked against The Flower Expo (official site) on 2026-09-17. Always confirm date, time and address with the organizer before you travel.

NECANN's Rhode Island edition of its regional cannabis trade show series, with exhibitor booths and industry programming at the Providence convention center. This is the only NECANN-branded Rhode Island event confirmed on the organizer's own site, but see the date-conflict note before using it.

When

Friday, October 15, 2027 – Saturday, October 16, 2027 · 10:00 AM

Address

1 Sabin St, Providence, RI 02903

Run by

NECANN

Event page

Note: DATE CONFLICT, flagged rather than presented as reliable: NECANN's own event page clearly states 'October 15-16, 2027' with no mention of a 2026 date anywhere on the page. However, two secondary aggregators - Distru (distru.com/cannabis-events/necann-rhode-island, quoting 'scheduled for September 25-26, 2026, at the Rhode Island Convention Center') and RhodeIslandCannabis.org - both state September 25-26, 2026 instead. No browser tool was available this session to check the event's Facebook page for a tiebreaker (direct fetch was blocked by robots.txt). This event is also 13 months out, beyond the requested ~9-month window. Included only for awareness; call NECANN directly before promoting to customers.

Listing checked against NECANN (official site) on 2026-09-17. Always confirm date, time and address with the organizer before you travel.