Put on safety glasses, gloves and closed toe shoes for protection before lighting and working with a weed flamer or weed wand.
Prepare the weed flamer or wand, following the manufacturer's directions. Fill the fuel tank or insert a propane gas cylinder into the flamer or wand. Pump the tank to pressurize the fuel, if necessary, and open the control valve for lighting. Light the end of the flamer with a long stick match or lighter and allow to preheat.
Position the end of the flamer or wand so the flame will not contact the weeds. Instead, use the high heat to singe the leaves.
Apply a short burst of flame above the weeds and direct the heat to all exposed leaves.
Move slowly through the garden or landscape, taking care to avoid contacting flowers, vegetables or landscape plants with the heat or flame.