Joking aside, primal gardening never depends on chemicals to be rid of weeds, rather you just gotta get down and toil in the soil. Get the hands dirty and pull out the weeds, so the crops aren't forced to compete for nutrients. Furthermore, primal gardening requires primal fitness, as picking weeds demand squatin' and lungin' to clean up the front row as well as the back row.
(If you’re interested in starting your own garden while getting healthy and fit at the same time, simply sign up with PG. You'll receive primal gardening advice and the knowledge to start and manage your own garden.)