• Southern Ag Atrazine 4% St. Augustine Weed Killer – Selective Herbicide for Broadleaf Weeds & Grassy Weeds in Warm-Season Lawns
  • Southern Ag Atrazine 4% St. Augustine Weed Killer – Selective Herbicide for Broadleaf Weeds & Grassy Weeds in Warm-Season Lawns

Southern Ag Atrazine 4% St. Augustine Weed Killer – Selective Herbicide for Broadleaf Weeds & Grassy Weeds in Warm-Season Lawns

Reliable Weed Control for St. Augustine & Warm-Season Lawns

Southern Ag Atrazine 4% Weed Killer is a trusted selective herbicide designed specifically for St. Augustinegrass and other warm-season turf, providing effective control of many broadleaf and grassy weeds without damaging desirable lawn grasses when used as directed.

Perfect for homeowners and professionals, this product delivers both pre-emergent and early post-emergent control, helping prevent weeds before they start while also targeting existing growth.


🌱 Controls a Wide Range of Weeds

  • Chickweed
  • Henbit
  • Spurge
  • Clover
  • Sandspur (suppression)
  • Annual bluegrass (Poa annua)
  • Other listed broadleaf and grassy weeds

Key Features & Benefits

  • Active Ingredient: Atrazine 4.0%
  • Selective Weed Control – safe for St. Augustinegrass and Centipedegrass
  • Pre & Post-Emergent Action – prevents and controls weeds
  • Excellent for Warm Climates – ideal for Southern lawns
  • Easy-to-Mix Liquid Concentrate
  • Proven Performance – widely used and trusted formula

🏡 Ideal Use Sites

  • St. Augustinegrass lawns
  • Centipedegrass lawns
  • Residential landscapes
  • Commercial turf areas

🌿 Turfgrass Compatibility

Safe for:

  • St. Augustinegrass
  • Centipedegrass

⚠️ Do NOT use on:

  • Bermuda grass
  • Zoysia grass
  • Fescue or cool-season grasses

📋 Application Instructions

  • Apply as a broadcast or spot treatment
  • Use on actively growing weeds for best post-emergent control
  • Apply before weed germination for pre-emergent control
  • Avoid applications during extreme heat or drought stress
  • Follow label rates carefully

⚠️ Safety & Environmental Notes

  • Do not apply near water bodies or where runoff may occur
  • Keep out of reach of children and pets
  • Always follow EPA-approved label instructions
  • Observe local regulations regarding atrazine use

📊 Product Specifications

  • Formulation: Liquid concentrate
  • Active Ingredient: Atrazine 4.0%
  • Application Type: Pre- and post-emergent herbicide
  • Use Sites: Warm-season turf (St. Augustine & Centipede)
  • EPA Registered: Yes

Why Choose Southern Ag Atrazine 4%?

This product is one of the most effective and economical solutions for St. Augustine lawns, offering broad-spectrum weed control with both preventative and curative action—perfect for maintaining a clean, healthy lawn in southern climates like Florida.

Product Options...

$17.95