Stop Weeds Before They Start — Professional-Strength Granular Pre-Emergent for Landscape Beds & Ornamentals.
Shaw's 500 Treflan Granules deliver powerful, long-lasting pre-emergent weed control for landscape professionals and serious homeowners. Formulated with 5% Trifluralin, this industrial-strength granular herbicide creates a protective barrier in the soil that stops annual grasses and broadleaf weeds from germinating — keeping your landscape beds, ornamental plantings, and hardscape edges clean all season long. Manufactured by Knox Fertilizer Company — an Indiana-based leader in professional turf products with over 70 years of experience — Shaw's 500 Treflan is trusted by landscapers, municipalities, and commercial grounds crews who need reliable, high-concentration weed prevention without repeated applications. Application rates, timing, and the full list of labeled plants and sites come from the manufacturer's label, so always read and follow label directions.
