Guardian Pre-emergent 13-0-10 Fertilizer

Feed Your Lawn. Stop Weeds Before They Start.

Guardian 13-0-10 is a professional-grade pre-emergent fertilizer designed to do two jobs at once — prevent crabgrass and annual weeds 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
• Other annual grassy and broadleaf weeds

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

Why Guardian 13-0-10 Is Different

• 13% Nitrogen for rich green color — promotes steady top growth without excessive surge.
• 50% XCU slow-release nitrogen — feeds gradually for extended performance and improved efficiency.
• 10% Potassium (potash) — strengthens roots and improves drought, heat, and disease tolerance.
• Professional-grade formulation — built for consistent, even results.

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 plan to seed. Prodiamine prevents all seeds from germinating, including grass seed.

Application Instructions

Rate: Apply at 4–5 lbs per 1,000 square feet using a broadcast spreader.

Watering: Water in with ½ inch of irrigation or rainfall within 7 days to activate the pre-emergent barrier.

Application Timing

• Cool-Season Lawns: Apply February–April before soil temperatures reach 55°F. A second application 6 weeks later extends control.
• Warm-Season Lawns: Apply February–April and again in September to prevent winter weeds.

Pre-emergent must be applied before soil temperatures reach 55°F for several consecutive days in spring to prevent crabgrass germination.

Dormant lawn? If you do not want nitrogen, use Safeguard 0-0-7 Pre-Emergent instead.