Southern Ag 006130 Atrazine St. Augustine Weed Killer 32oz Specialty Herbicide, Light Tan

What It Is

Southern Ag 006130 Atrazine St. Augustine Weed Killer 32oz is a liquid herbicide concentrate designed for use on St. Augustinegrass lawns. It targets broadleaf weeds and grassy weeds like crabgrass and foxtail, without harming the turf when applied correctly.

Fitment & Compatibility

This is not a mower part—it’s a chemical treatment, so fitment refers to turf type and application method. Only use on established St. Augustinegrass (or centipedegrass, if label permits). Do not apply to Bermuda, Zoysia, or fescue lawns—atrazine will damage or kill them. The 32oz bottle mixes with water for sprayer use (hose-end, backpack, or pump sprayer). Check your lawn’s temperature: apply when air temps are between 60°F and 85°F. Avoid use during drought stress or on newly sodded grass (wait until after second mowing). Always read the full label for specific timing and mixing ratios—Southern Ag’s label is your final guide.

Key Things to Know

• Application difficulty: Easy—just mix concentrate with water per label instructions (typically 4 oz per gallon for 1,000 sq ft). Wear gloves and eye protection.
• Quality: Rated 4.3/5 from 1,141 reviews. Users report good weed control on dandelions, clover, and chickweed, but results vary with weed size and weather.
• Common gotcha: Atrazine is a pre-emergent and post-emergent herbicide. It can stain concrete or driveways if overspray occurs. Avoid runoff into waterways—it’s toxic to aquatic life. Do not apply near wells or drainage ditches.
• Storage: The concentrate is stable if kept cool and dry. Dispose of empty containers per local hazardous waste rules—do not reuse.

Should You Buy It

Buy this if you have a St. Augustinegrass lawn and need a reliable, affordable weed killer that won’t harm your turf. It’s ideal for spot-treating broadleaf weeds or as a seasonal pre-emergent for annual grasses. Skip it if you have other grass types or need a non-selective herbicide (try glyphosate instead). For $16.44, it’s a good value for targeted weed control.