Cannabis Calendar · May 2026
Cannabis events & dates — May 2026
Everything on the cannabis calendar for May 2026: conferences and trade shows, retail sales days, policy and voting dates, and regulatory and tax deadlines. Click any item for details and add-to-calendar links, or switch to the week and day views.
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KeyEventSalesPolicyRegulatoryTaxCultureDashed outline = date estimated or pending; confirm with the organizer before booking.
All items in May 2026
1 item- May 22, 2026
Friday before Memorial Day
Start of the summer holiday weekend — a reliable secondary sales bump for retailers; no industry-wide lift figure published.
Missing an event in May 2026?
Organizers are listed free. Send us the dates and the source and we’ll add it after checking.