Koch Turf & Ornamental POLYON Fertilizer
Koch Turf & Ornamental POLYON Fertilizer


Product Overview

POLYON® controlled-release fertilizer with its trademarked green color is backed by years of research, and for decades has been the market leader in the turf and ornamental markets. The key to its performance is the Reactive Layers Coating technology which meters out nutrients via diffusion, regulated by soil temperature and coating thickness.

Controlled Release

“Once I have POLYON® down, I have one less thing to worry about and can expect consistent performance every year.”

Brad Novotny, Hillendale Country Club

reactive layers coating technology

Controlled Release
  1. Ultra-thin, ultra-tough polyurethane coating
  2. Unique coating process for consistent nitrogen (N) release
  3. Specially selected granules are round, uniformly sized and dust-free to facilitate coating process
  • SGN options - micro, mini, and regular
  • Thickness of coating determines longevity from 8 to 52 weeks

How It Works

Controlled Release

Within a week of application, soil moisture penetrates the polymer coating through osmosis.

Controlled Release

Encapsulated nutrients are dissolved, but not released.

Controlled Release

Over time the dissolved nutrients slowly release through diffusion, only when triggered by soil temperature.

Controlled Release

After the complete release of nutrients, the polymer coating eventually decomposes by microbial activity into naturally occurring soil elements.

Product Benefits

POLYON® controlled-release fertilizer is formulated for turf, landscape and nursery applications.

  • Temperature-driven nutrient release, not affected by excess moisture or rainfall
  • Consistent, predictable feeding; minimal surge growth and low burn potential
  • Fewer applications save time and offer the ability to reallocate labor resources to other tasks
  • Greener, healthier turf for the ultimate playing surface or lawn
  • Dust-free handling and long shelf life due to durable coating
  • Environmentally responsible with low potential for nutrient leaching, run-off or volatilization

Applicational & Nutritional Options

Superintendents, lawn and landscape managers, and nursery and greenhouse growers will find POLYON® fertilizer in the sizes they need:

  • Micro SGN options for golf greens
  • Mini SGN options for golf tees and fairways
  • Regular SGN options for golf, landscape and ornamental applications

Substrate options are also available with varying longevities:

  • Urea 8 to 52 weeks
  • Monammonium Phosphate 16 to 32 weeks
  • Muriate of Potash up to 16 weeks
  • Potassium Sulfate 16 to 32 weeks
  • Magnesium Potassium Sulfate about 30 weeks
  • Homogeneous NPKs, NPKs + minors

Release specifications for 80% total nutrient release at 86°F.

POLYON® fertilizer in the nursery / greenhouse

POLYON® fertilizer is available in the formulations and longevities professional growers need to produce the best plants possible.  Homogeneous NPK + Minors • Homogeneous NPK


*Based on analysis of 43-0-0 applied at 1 lb. N per 1000 sq. ft.


Contact Information

Harrell's is the sole nationwide distributor of POLYON® controlled-release fertilizer in the United States. To purchase POLYON® fertilizer in the U.S. or for more information, contact your Harrell's sales representative:

For inquiries outside of the United States, contact your Koch Turf & Ornamental Sales Representative:

Diamond in the Rough

“Consistency was missing with fertilizer prior to POLYON®.”

Mark Langner, former FarmLinks Director of Agronomy

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