N-Ext Sea-K™ 0-0-5 Stress Reducer, Bloom and Root

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:: Bio-Stimulant Sea-K   :: Pro Formulation now available to DIY ::

Limited Run - 32 Ounces covers up to 64,000 sq ft

Known in the professional applicator community as "microbe food," bio-stimulant N-Ext Sea-K is your secret weapon in jump-starting even the most tired soils. It is also known to help lawns under stress. Being highly concentrated also means you need very little to get desired results so this small quart bottle can be stretched up to 64,000 sq ft (see application rates below)

Cool Season Turf:

You can use this in spring to wake your lawn up faster than everyone else's (put it down on top of your early spring pre-emergent and water them in together) or during summer to help relieve heat stress. When the microbes are fired up and the soil is teeming with life, grass roots are happy.

Warm Season Turf:

During winter, as long as your ground is not frozen, the microbes are still alive; don't neglect them! Keep the lawn watered as we always recommend, and work in an app or two of Sea-K to feed them while the lawn lays dormant - this will help your lawn wake up faster and happier come spring.

For those on a budget, this can become your go-to bio-stimulant since you can use the low rate of 1/2 oz per 1,000 sq ft monthly to stimulate healthy soil, rooting and rhizome activity. Sylvestor Stolons approved!

From The Manufacturer, Greene County Fertilizer:

N-Ext Sea-K™ contains a highly concentrated Sea Kelp derived from the cold waters of the North Atlantic.

N-Ext Sea-K™ contains high concentrations of Auxins, Gibberellins, and Cytokinins. These combined with the naturally occurring trace elements and minerals will give an added boost to your fertility program.

The benefits of N-Ext Sea-K™ are:  

  • Deeper color
  • Increased rooting
  • Increased pest resistance
  • Increased drought protection
  • Increased nutrient uptake
  • Reduced senescence

Product is intended to be used as an additive to current fertilizer program.


YM and LCN Highly recommend you apply this with precision from a pump/battery hand can sprayer and water it in after app with at least 1/4" of irrigation or rain.

It can be applied with an Ortho Dial-N-Spray too but since this is concentrated and more expensive, it's better to control it with a pump/battery sprayer. We don't want you to waste this precious bio-stimulant.

Low Rate: 1/2 oz per gallon of water. 1 gallon of mix covers 1,000 sq ft.

High Rate: 1 oz per gallon of water. 1 gallon of mix covers 1,000 sq ft.

You could start out with the higher rate on your first application, then go to the lower rate for the remainder of the season and be in very good shape. Apply monthly.

Be sure to water applications in after. Best applied when outside air temps are under 85F so if it's hot, apply in the early morning or evening.

Note: the jug in the photo is empty for display purposes only. The actual product is darker in color as you would expect.