Preen Weed Preventer 5.6lb

Preen Garden Weed Preventer stops weeds from germinating in flower and vegetable gardens, in ground covers and around trees and shrubs. Although Preen will not kill existing weeds, it will prevent new weeds from sprouting.. Apply Preen Garden Weed Preventer anytime during the growing season around established plants and transplants. Preen should not be used on flower seeds. It can be used after flowering plants have germinated and are 2-3 inches tall. Preen may also be incorporated into the soil when seeding vegetables or applied after mulching beds.. Rain does not wash this product out of the soil. To keep beds weed-free all season long, reapply Preen Garden Weed Preventer every 9 - 12 weeks.