Why You Should Never Add Laundry Detergent to Lawn Fertilizer

Introduction

Some old myths suggest adding dry detergent to fertilizer as a surfactant. This is harmful and illegal in many areas.

Harmful Effects

• Detergents contain harsh chemicals (phosphates, surfactants) that pollute streams and kill aquatic life.
• They can burn or kill grass and beneficial soil microbes.
• No proven benefit for nutrient uptake.

Proper Alternatives

• Use a quality spreader for even granular distribution.
• For surfactant needs, use horticultural wetting agents labeled for turf.
• Focus on soil health: organic matter, deep watering, microbial activity.

Conclusion

Detergent on lawns is an environmental hazard with no agronomic upside. Stick to approved turf products.