The 14th annual Emerald Cup will take place at the Sonoma County Fairgrounds in Santa Rosa, California December 9 – 10. Organizers of the long-running event recently detailed the initial lineup.

The Roots have been tapped to headline and will be joined by Gramatik, Hieroglyphics, Pimps Of Joytime and Chali 2NA. Look for another wave of artists to be announced in the weeks to come. “Music has always been an important aspect for our event and I’m very excited how 2017’s lineup is shaping up. After a day full of educational panels and informative workshops, it’s essential we bring the right vibes of music and entertainment to our attendees,” founder Tim Blake said.Here’s more information on the Emerald Cup:

The Emerald Cup, founded by Tim Blake in 2003, is California’s premier outdoor organic medicinal cannabis competition for growing and breeding. What started as a small passionate 200-person event at Blake’s Area 101 property has blossomed into today’s most prestigious organic cannabis competition. The two-day event gathers growers, industry leaders, and cannabis enthusiasts together to partake in educational panels from legislation to farming practices, while bringing you face to face with cutting edge vendors, and topped with a diverse musical lineup.

Tickets are available now via the event’s website.