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  Products » Gardens » Preen Mulch Plus - How it Works
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Preen Mulch Plus combines high quality hardwood, pine or cypress mulch with two long-lasting preemergence herbicides. In one, timesaving step, Preen Mulch Plus products keep broadleaf weeds and annual grasses from growing in flower and ornamental beds for up to six months. Without weeds competing for sunlight, nutrients and space, your plants will grow larger and stronger. (For lawn weed control, see the products listed under Lawns.)

 

Preen Mulch Plus:

  • Helps landscaped areas retain moisture and protects your plants, trees and shrubs from extreme temperatures.
  • Provides increased weed control versus ordinary mulches, when used as directed.
  • Contains only natural forest products, no recycled waste wood. These materials are ideal for mulches because they naturally degrade over time, turning into valuable organic matter.
  • Works by creating a chemical barrier that prevents cell division in developing weed seeds.
How Preen Mulch Plus Keeps Weed Seeds from Emerging
Weed Seeds Weed Seeds Weed Seeds

The Preen Mulch Plus chemicals attach to the mulch particles.

Preen Mulch Plus sets up a weed control zone in the mulch surface where most weed seeds germinate. The Preen Mulch  Plus chemicals  interfere with the cell division process in the root tip of the weed seeds.

Preen Mulch Plus causes the weed seedling to die before you ever see it emerge from the mulch surface.

 

 
 
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