Fertilome (13917) St. Augustine Weed & Feed 15-0-4 (25.6 lbs.)

What It Is

Fertilome (13917) St. Augustine Weed & Feed 15-0-4 is a granular fertilizer and herbicide blend designed specifically for St. Augustine grass lawns. It feeds turf while controlling listed broadleaf weeds and is applied via a broadcast or drop spreader.

Fitment & Compatibility

• Grass type only: Formulated for St. Augustine grass. Do not use on Bermuda, Zoysia, or Fescue—risk of damage.
• Spreader settings: Check your spreader’s manual for the recommended setting (typically medium to high). Calibrate by doing a test pass on pavement—too much can burn turf.
• Bag size: 25.6 lbs covers about 5,000 sq ft. Measure your lawn area first to avoid over/under-application.
• Seasonal timing: Apply only when St. Augustine is actively growing (late spring through summer). Never apply during dormancy or heat stress.

Key Things to Know

• Quality: Trusted brand with a 4.4-star rating from 70 reviews. Users report effective weed control without harming St. Augustine if applied correctly.
• Installation difficulty: Easy—just fill a spreader and walk. No mixing or sprayer needed. Takes about 15–30 minutes for a typical yard.
• Common gotcha: Do not apply within 30 days of seeding or sodding. Also, water lightly after application (about ¼ inch) to activate the herbicide.
• Safety: Keep off hardscapes—stains concrete. Sweep any granules off driveways or sidewalks back onto the lawn.

Should You Buy It

Buy it if you have St. Augustine grass and need a simple, all-in-one feed-and-weed solution for moderate broadleaf weed pressure. Skip it if your lawn is dormant, you need a fertilizer without herbicide, or you have a different grass type. For the price and coverage, it’s a solid choice for homeowners seeking convenience.