Legally, you can smoke cannabis in private spaces such as your home or the homes of friends and family, provided that it is not a public space. So yes, you can head to the kickback and light up, but not in the park or any other public space.nLikewise, California will fine you between $100 to $1000 if you spark up on federal lands, in national parks or within 1,000 ft of children. So, while that sunset hike might call for a celebratory joint, think twice about it!