Preen Extended Control Weed Preventer Spread Descriptor_12 inches Bold flowers such as blue

Bold flowers such as blue hydrangea and delphinium

dusty miller

Switch to 7-5-6 (green cap) when flower spikes fade

Highly recommended for use on fruit trees

purple stock

Preen Extended Control Weed Preventer Spread Descriptor_12 inches Bold flowers such as bluePreen Extended Control Weed Preventer is the longest lasting Preen yet, stopping weeds for up to six months per application. It's labelled for use around 600 plants in perennial flower beds; around groundcovers, trees and shrubs; and in xeriscape settings and rock gardens. Preen Extended Control Weed Preventer tackles many of the toughest weeds a gardener faces, including: dandelions, crabgrass, field bindweed, white clover, chickweed, henbit,