N-Ext Sea-K™ is known in the professional applicator community as "microbe food," this special bio-stimulant is your secret weapon in jump-starting even the most tired soils or stressed lawns.
Product Description:
Sea-K contains a highly concentrated Sea Kelp derived from the cold waters of the North Atlantic, as well as 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.
For those on a budget, this can become your go-to bio-stimulant since you use the rate of 1/2 oz per 1,000 sq ft monthly to stimulate healthy soil, rooting, and rhizome activity. Sylvestor Stolons approved! In addition, this small quart bottle can cover 64,000 sq ft.
You can SAVE MONEY with our "mix and match" Build-a-Box option.
For a list of all Greene County products, here is a link to the other options.
Application Information:
**We highly recommend you apply Sea-K with precision from a pump/battery hand can sprayer and water it in after application with at least 1/4" of irrigation or rain.
It can be applied with a quart hose-end sprayer bottle, 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. Here is a video with hose-end sprayer instructions.
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.
Sea-K can be used on all grass types, including the following:
| Coverage |
64,000 sq ft at the low rate (1/2 oz/1,000 sq ft) |
| Application Details |
Best applied when outside air temps are under 85F, so if it's hot, apply in the early morning or evening Apply every 30 days |
| Water-In Instructions |
Water into the soil within 24 hours with 1/4" of rainfall or irrigation Do not apply if your lawn is saturated. Rinse excess off sidewalks and driveways to avoid staining |
What is N-Ext Sea-K, and how does it help stressed lawns?
Sea-K™ is a 0-0-5 sea kelp bio-stimulant designed to support tired soils and stressed lawns. It contains concentrated North Atlantic sea kelp, naturally occurring trace elements, and plant compounds including auxins, gibberellins, and cytokinins. Regular applications may help promote deeper color, stronger root development, nutrient uptake, drought protection, and improved turf stress tolerance.
How do you apply Sea-K bio-stimulant to your lawn?
For precise application, mix 1/2 oz of Sea-K into a gallon of water and apply it evenly with a pump or battery-powered sprayer. Water the product into the soil with at least ¼ inch of rainfall or irrigation within 24 hours. Avoid applying Sea-K when the lawn is saturated.
How much lawn does one quart of Sea-K cover?
One 32 oz quart of Sea-K covers 64,000 square feet when applied at the label rate of ½ ounce per 1,000 square feet.
Can Sea-K be used on all grass types, and how often should it be applied?
Yes! Sea-K can be used on cool-season grasses such as Kentucky bluegrass, turf-type tall fescue, and ryegrass, as well as warm-season grasses including Bermuda, St. Augustine, zoysia, centipede, and Bahia. It is also labeled as safe for ornamental plants. Apply Sea-K every 30 days, preferably when temperatures are below 85°F; during hot weather, apply in the early morning or evening.
| Shipping |
Shipping is included for most states within the U.S. No P.O. Boxes. Not available in Oregon, California, Alaska or Hawaii. |
| Delivery Time | 4–7 business days |
| Returns | All sales are final; no cancellations, returns, or exchanges. |
| Customer Support | Contact Yard Mastery Support |
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