TO SAFELY USE WEED-KILLING TREATMENTS AND TO ENSURE THE BEST RESULTS, CAREFULLY READ AND FOLLOW ALL PRODUCT DIRECTIONS PRECISELY.
BURNING OR HORTICULTURAL VINEGAR These postemergence options are most effective on newly sprouted weeds—particularly annuals—without a taproot. Neither method should be used on lawns. Burning with a flame weeder should be done only on moist, calm days to prevent fire from spreading. Vinegar-based herbicides require special handling because of the high concentration of acid, which can burn skin and eyes. Monitor treated areas for resprouting weeds.
If you have a severe weed problem, applying a preemergence product such as Preen on your lawn or flower gardens in early spring helps prevent weed seedlings from growing before they germinate, yet it allows established perennial plants to grow. Preemergent herbicides will not kill established weeds.
For tenacious enemies like poison ivy or brambles, selectively and carefully spray or brush on a foliar herbicide such as glyphosate or triclopyr on a non-windy day following the label’s directions. Do not place weeds killed by a chemical herbicide in the compost bin.