420 may have started out in California, but it’s quickly become a beloved holiday in Massachusetts. The Carniroll music and carnival experience is hosting The Roll Up, a music and community celebration headlined by Wiz Khalifa, Waka Flocka Flame, and others on April 15th-17th in Northampton. Mas Grass Festival, April 23rd-24th, is another cannabis-forward music and community event happening in Greenfield. The event will host 25 bands, feature a Mystical Village, and a 21+ Glass and Grass Lounge.