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    • Weed Control

Keeping your lawn lush and weed-free doesn’t have to mean using harsh chemicals. At Golf Course Lawn, we offer the best organic weed killers designed to eliminate unwanted weeds while keeping your soil, pets, and the environment safe. Whether you’re looking for an organic herbicide to spot-treat problem areas or a full-coverage organic weed control solution, we have you covered.

mirimichi green organic weed control 2.5 gallon jug on lawn
Organic Weed Control - Concentrate
  • $159.99
  • $149.99
Weed spray Ready to use spray bottle
Organic Weed Killer - Ready to Use Spray
  • $34.99
  • $29.99

Why Choose Organic Weed Killers?

Mirimichi Green Organic Weed Control is a fast-acting, nonselective, organic herbicide that works on residential and commercial lawns, sports fields, municipalities, and even golf courses. Unlike synthetic weed killers, this formula breaks down rapidly in the soil, leaving no harmful residues and ensuring environmental safety.

  • Visible results in just 15 minutes
  • Safe for people and pets when used as directed
  • Ideal for gardens, walkways, greenhouses, and spot treatments
  • Does not require a surfactant
  • Rainfast in 2 hours after drying

This organic alternative to glyphosate delivers a powerful burn-down effect on weeds and grass alike. Since it is nonselective, it will kill both weeds and turf, making it a great option if you're planning a complete lawn renovation.

Available in both an easy-mix concentrate and a ready-to-use spray.

How Mirimichi Green Organic Weed Killers Work

The active ingredient in Mirimichi Green Organic Weed Killer is ammonium nonanoate, which functions as a contact herbicide, targeting the cellular structure of plants. Upon application, it penetrates plant cells and disrupts cell membranes, leading to rapid desiccation and cell death. This process causes treated plants to exhibit visible signs of damage, such as wilting and discoloration, within hours. The herbicide is particularly effective on warm, sunny days, though it remains active in cooler climates as well.

We’re committed to helping you achieve the lawn of your dreams at Golf Course Lawn. Browse our full range of lawn-care products and get FREE shipping.

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How are your products different from what I can buy at a local big-box store?

Our products are specifically formulated for golf course-quality lawns, offering professional-grade nutrients and performance. Unlike generic fertilizers, our solutions are optimized for precise results, ensuring a lush, green lawn that stands out.

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Pro formulas, real results

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Pro formulas, real results

Curated lawn care

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Pro formulas, real results

Curated lawn care

No guesswork

Unlock your best lawn

Pro formulas, real results

Curated lawn care

No guesswork

Unlock your best lawn