THESE REMAIN

in the ground for weeks or months depending on the active ingredients. Some can be used around established woody plants, while others can only be used on hard surfaces, paths and drives. They can’t be used where perennials and bulbs are growing. How do they work? They create a weedkilling layer in the ground to kill new growth and prevent newly emerging weed seedlings. Why would I buy them? They tackle current weeds and halt new ones.