309 Weed Beater Ultra Broadleaf Weed Killer Concentrate, 16 Oz.

Bonide Weed Beater Ultra is a liquid herbicide concentrate designed to eliminate over 200 broadleaf weeds from lawns while leaving desirable grass plants unharmed. This selective weed killer targets common problem weeds including dandelion, clover, ground ivy, chickweed, oxalis, ragweed, and many others, giving you precise control over unwanted vegetation without damaging your lawn.

The formula delivers visible injury to weeds within hours and complete plant death within 7–14 days. It performs reliably across temperature ranges, with excellent results even in cool weather down to 45°F, making it an ideal choice for spring and fall applications when many traditional herbicides lose effectiveness.

Features and Benefits

• Broad weed control: Kills over 200 listed broadleaf weeds, addressing most common lawn invaders in one application.
• Rainproof formula: Becomes rainproof within hours of drying, protecting your application from unexpected showers and ensuring consistent results.
• Quick visible results: Weed injury appears within hours; complete plant death occurs in 7–14 days so you see progress fast.
• Cold-weather performance: Works effectively down to 45°F, providing consistent weed control during spring and fall when temperatures are cooler.
• Easy mixing: Instantly mixes with water; apply with any backpack, compression, or knapsack sprayer for convenient yard treatment.
• Kills roots: Eliminates weeds completely from the root, preventing regrowth and allowing you to reseed lawns in just 2 weeks.

Specifications

• Brand: Bonide
• Model: 309
• Size: 16 oz. concentrate
• Application method: Spray (mix with water)
• Effective on: Over 200 broadleaf weeds
• Active ingredients: MCPA, Mecoprop-p, Dicamba, and Carfentrazone (non-2,4-D formula)
• Minimum effective temperature: 45°F