1.5 ounces of glyphosate per gallon of water for most applications.
Glyphosate herbicide is typically mixed at a rate of 1.5 ounces (44 ml) per gallon of water for general weed control. This concentration works well for annual weeds and light brush. For tougher perennial weeds or woody brush, increase to 2.5 ounces per gallon. Always check the product label for specific mixing instructions, as concentrations vary by brand and formulation.
Mixing Ratios by Weed Type
- Annual weeds: 1.5 oz per gallon
- Perennial weeds: 2.0 oz per gallon
- Woody brush: 2.5 oz per gallon
- Industrial areas: 3.0 oz per gallon
Comparison of Common Glyphosate Mixing Ratios
| Weed Type | Amount per Gallon | Coverage Area | Effectiveness |
|---|---|---|---|
| Annual weeds | 1.5 oz | 300 sq ft | Good |
| Perennial weeds | 2.0 oz | 250 sq ft | Better |
| Woody brush | 2.5 oz | 200 sq ft | Best |
Application Tips for Best Results
- Mix herbicide in clean sprayer only
- Add surfactant (0.5 oz) for better adhesion
- Apply when weeds are actively growing
- Avoid windy conditions to prevent drift
- Wait 7 days before cultivating treated areas
Safety Precautions When Mixing Glyphosate
Always wear chemical-resistant gloves, long sleeves, and eye protection when handling concentrated glyphosate. Mix in a well-ventilated area away from pets and children. Never mix more than you plan to use immediately, as the solution loses potency over time. Clean all equipment thoroughly after use.