best pre-emergent herbicide for crabgrass Guardian Pre-Emergent 13-0-10 Fertilizer 18 lbs

best pre-emergent herbicide for crabgrass Guardian Pre-Emergent 13-0-10 Fertilizer 18 lbsGuardian 13 0 10 is a professional grade pre emergent fertilizer designed to do two jobs at once prevent crabgrass and annual weed seeds from germinating while feeding your lawn for deep green, steady growth. If you want a clean lawn without fighting weeds all summer, this is where you start. What Guardian Prevents Crabgrass Goosegrass Poa annua (annual bluegrass) Spurge Chickweed Oxalis Guardian contains . 37% Prodiamine, creating a long lasting soil

Guardian 13-0-10 is a professional-grade pre-emergent fertilizer designed to do two jobs at once — prevent crabgrass and annual weed seeds from germinating while feeding your lawn for deep green, steady growth.

If you want a clean lawn without fighting weeds all summer, this is where you start.

What Guardian Prevents

• Crabgrass
• Goosegrass
• Poa annua (annual bluegrass)
• Spurge
• Chickweed
• Oxalis
  

Guardian contains .37% Prodiamine, creating a long-lasting soil barrier that prevents weed seeds from germinating.

Why Guardian 13-0-10 Is Different

• Nitrogen for rich green color — promotes steady top growth without excessive surge.
• Slow-release nitrogen — feeds gradually for extended performance and improved efficiency.
• Potassium — strengthens roots and improves drought, heat, and disease tolerance.
• Professional-grade formulation — built for consistent, even results.
• Bio-based — enhance soil structure and naturally support long-term lawn health.

The result is a thicker, darker lawn that naturally crowds out weeds.

Ideal For

• Tall Fescue
• Kentucky Bluegrass
• Bermuda
• Zoysia
• St. Augustine
• Centipede

⚠️ Do not apply if you are planning on seeding.  Prodiamine prevents all seeds from germinating, including grass seed for up to 3-4 months.