Rapper Snoop Dogg is preparing to celebrate cannabis culture's 4/20 holiday later this month (Apr14) by hosting two Wellness Retreat concerts with fellow pot-lover Wiz Khalifa.

The Beautiful hitmaker, who has long been an advocate of marijuana use, will headline the first gig in Seattle, Washington on 19 April (14), and he will mark the big day itself on 20 April (14) onstage in Denver, Colorado.

Both locations are among a slew of U.S. states where marijuana use has recently been legalised, although smoking weed in public is technically still illegal.

The slogan for the concerts' posters reads, "Inhale. Exhale. Recharge", while the promotional material also instructs fans to "get higher with recreational gurus Snoop Dogg and Wiz Khalifa".