Flamers, or burners, which use propane gas to burst the plant’s membranes, work well for small annual weeds. They will burn back perennials, but not kill them, requiring additional treatment to control perennial weeds. There are no easy solutions to controlling weeds in an organic orchard or vineyard. While there are several options available for organic growers, most have pros and cons to their use, says a ­University of California weed ecologist. Effective and economical weed control is one of most often cited problems by organic growers. The more ­common organic weed control methods include cultivation, mulch, flamers or burners, […]