The Cannabis Calendar · US + Canada

Every date the cannabis industry runs on, in one calendar.

Trade shows and conferences, the retail sales days that move the year (4/20, Green Wednesday, 7/10), ballot measures and federal policy dates, and the state licensing, regulatory and tax deadlines that operators actually have to hit. Filter by type, state or the part of the industry you serve — and subscribe from Google, Apple or Outlook so it lives in your own calendar.

90 dated items11 states with pages31 industry eventsChecked against organizer & regulator sources

StateRelevant toSearch

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KeyEventSalesPolicyRegulatoryTaxCultureDashed outline = date estimated or pending; confirm with the organizer before booking.

Next 60 days

17 items

Aug 26–28, 2026
CHAMPS Trade Show — Las Vegas (Summer)
Industry eventsLas Vegas, NVLas Vegas Convention Center, South Hall
The largest of CHAMPS' counterculture and smoke-shop trade shows — glass, vape, hemp and accessory manufacturers meeting head-shop, dispensary and wholesale buyers.
Organizer: CHAMPS Trade Shows CHAMPS Trade Shows ↗Add to calendar
Aug 28–29, 2026
CannaCon Midwest — St. Louis
Industry eventsSt. Louis, MOAmerica's Center (701 Convention Plaza)
Regional B2B expo with an exhibitor floor and education tracks across cultivation, extraction, retail and compliance, serving the Missouri and Illinois markets.
Organizer: CannaCon CannaCon ↗Add to calendar
Aug 28–29, 2026
Lucky Leaf Expo — Richmond
Industry eventsRichmond, VAGreater Richmond Convention Center
Two-day expo and conference for Virginia's emerging adult-use market — licensing, cultivation, retail and ancillary services. A one-day "crash course" runs August 27.
Organizer: Lucky Leaf Expo Lucky Leaf Expo ↗Add to calendar
Aug 31, 2026
Kentucky OMC comment period closes — 915 KAR 2:050
Regulatory deadlines
Last day to file written comments on Kentucky's proposed qualifying-conditions regulation for the medical cannabis program.
Kentucky Office of Medical Cannabis ↗Add to calendar
Sep 4, 2026
Friday before Labor Day
Retail sales dates
End-of-summer holiday weekend; the Friday is the sales spike.
Add to calendar
Sep 15, 2026
Extended federal return due — partnerships & S-corps; Q3 estimates
Tax deadlines
Extended 1065 / 1120-S returns are due; third-quarter estimated tax payment due.
IRS — filing deadlines ↗Add to calendar
Sep 15–16, 2026
Flower Expo Illinois
Industry eventsChicago, ILest.
Illinois cultivation-and-brand focused expo. Dates from a third-party conference roundup — confirm with the organizer before travelling.
Grasslands — 2026 conference roundup ↗Add to calendar
Sep 17–18, 2026
Benzinga Cannabis Capital Conference — Chicago
Industry eventsChicago, ILest.
Investor-facing cannabis conference. Third-party listings conflict on the 2026 edition (a June Chicago edition under the IgniteIt banner vs. September 17–18) — treat these dates as unconfirmed until the organizer publishes them.
Organizer: Benzinga Cannabis Capital Conference Benzinga events ↗Add to calendar
Sep 18–19, 2026
NECANN New Jersey Cannabis Convention + NECANN Cup
Industry eventsAtlantic City, NJAtlantic City Convention Center
NECANN's New Jersey convention — exhibitors, education and networking for the Garden State market, alongside the NECANN Cup competition.
Organizer: NECANN NECANN — New Jersey ↗Add to calendar
Sep 23–24, 2026
Ohio Cannabis Health & Business Summit
Industry eventsColumbus, OHest.
State-focused summit for Ohio's medical and adult-use market. Third-party sources disagree on dates and city (Sept 23–24 Columbus vs. Oct 3 Cleveland) — verify with the organizer.
Grasslands — 2026 conference roundup ↗Add to calendar
Sep 25–26, 2026
NECANN Rhode Island Cannabis Convention
Industry eventsProvidence, RIRhode Island Convention Centerest.
NECANN's Rhode Island edition. The 2026 dates come from third-party guides; NECANN's own page currently lists only the October 15–16, 2027 edition.
Organizer: NECANN NECANN — Rhode Island ↗Add to calendar
October 2026 · dates TBA
CHAMPS Trade Show — Austin
Industry eventsAustin, TXest.
CHAMPS' fall Texas edition. Exact October dates not yet published on the organizer's site.
Organizer: CHAMPS Trade Shows CHAMPS Trade Shows ↗Add to calendar
Oct 2–3, 2026
NECANN New York Cannabis & Hemp Convention
Industry eventsAlbany, NYAlbany Capital Centerest.
NECANN's New York convention in Albany — the state's largest B2B cannabis and hemp gathering. Dates per the New York State Cannabis portal; confirm on necann.com.
Organizer: NECANN NECANN ↗Add to calendar
Oct 6–8, 2026
Cannabis Research Conference
Industry eventsPortland, ORest.
Academic and applied research conference on cannabis science, agronomy and health. Dates from a third-party listing.
Emerald Intel — industry events ↗Add to calendar
Oct 14–15, 2026
MJ Unpacked — Kansas City
Industry eventsKansas City, MOSheraton Crown Center
Curated conference and expo for licensed operators, brands and retailers, with investor programming. Pre-conference activities October 13.
Organizer: MJ Unpacked MJ Unpacked ↗Add to calendar
Oct 15, 2026
Extended federal return due — C-corps & individuals
Tax deadlines
Extended 1120 and 1040 returns are due.
IRS — filing deadlines ↗Add to calendar
Oct 21–22, 2026
Hall of Flowers — New York
Industry eventsNew York, NY
Curated B2B trade show pairing licensed New York retailers with brands and ancillary providers.
Organizer: Hall of Flowers Hall of Flowers ↗Add to calendar

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Guides

Cannabis retail sales holidays — the planning guide

How the calendar is kept

Sourced, not scraped

A date is confirmed only when it comes from the organizer, the regulator or an official government source. Anything from a third-party list is shown as est. until we’ve checked it, and every item shows the date it was last checked.

Reviewed monthly

Every item inside the next 120 days is re-checked against its source each month; recurring dates (sales holidays, tax deadlines) are rolled forward a year ahead. Legislation with a moving effective date is flagged date pending.

Free to be listed

Organizers get a free profile in the Register and can claim it to keep dates current. Placement is never sold; if that ever changes, it will be labelled.

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