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Polyon® is the key timed-release ingredient in fertilizers manufactured by Pursell Industries of Sylacauga, Alabama. Gardeners who use plant foods containing Polyon-coated nutrients enjoy season-long feeding with one application. Because fertilizers containing Polyon are granular, you don’t have to mix or pour messy liquid fertilizer again and again. Instead, you can just spread fertilizer with Polyon and forget about it. It makes gardening easy.

Polyon is distinguished as a unique green coating that bonds to fertilizer granules. If it’s not green, it’s not Polyon.™

Depending on the thickness of the coating, the green Polyon-coated granules are timed to release for 2, 3, 6, or 9 months (measured at *72° F (+22° C) soil temperature). The length of timed-release varies depending on each product’s formula. That means that you can choose a fertilizer that lasts as long as you need it. This steady, predictable release feeds plants slowly, as they can use it.

The chart below shows the advantage of fertilizers containing Polyon-coated nitrogen compared to other types of nitrogen. (Nitrogen is the most important--and most expensive--ingredient in most fertilizers). Pound per pound, fertilizers containing Polyon-coated nitrogen are a better value than fertilizers that release all of their nitrogen quickly, only to be washed away. Polyon’s timed-release approach to feeding reduces waste, fertilizer runoff or pollution, and saves you time and money.

You will find that most plant foods containing Polyon-coated nutrients feed plants both now and later, so some of the granules in the bag are not coated at all. This is by design. The thoughtful mix of both fast and timed-release plant food provides some instant feeding and planned, long-lasting nutrition. See What's in the Bag? to learn more about the nutrients in different fertilizers and what they do.

Polyon is a registered trademark of RLC Technologies, LLC


-   See how Polyon® timed-release nitrogen compares to other types of nitrogen.

Lasts 2, 3, 6, or 9 months*
Lasts 6 to 8 weeks
Lasts only 2 to 4 weeks
Too much rain or overwatering does not affect release
Too much rain or overwatering speed release
Too much rain or overwatering speeds release
Resists leaching
Can leach in heavy rains
Is quickly dissolved, then leached or washed away
Release based on soil temperature
Release based on soil moisture
Release based on soil moisture
Will not burn lawn or plants
Not likely to burn
Can burn lawn and plants
Saves time and money
Saves some time
Appears cheaper, but really isn't
*At 72° F (+22° C) soil temperature.

Polyon® timed-release fertilizer lasts longer and feeds more predictably than other types


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