SKU: 7954289001
seaweed tonic for plants without fertilizer

seaweed tonic for plants without fertilizer N-Ext Sea-K (Sea Kelp for Lawns) 0-0-5 Stress Reducer, Bloom and Root – Yard Mastery

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Ships within 48 hours · Estimated delivery Sep 30 - Oct 5

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Description

seaweed tonic for plants without fertilizer N-Ext Sea-K (Sea Kelp for Lawns) 0-0-5 Stress Reducer, Bloom and Root – Yard MasteryN 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. 1 Quart covers up to 64,000 sq ft Analysis is 0 0 5:: N P K Benefits include deeper color, increased rooting, pest resistance, drought protection, increased nutrient uptake, and reduced senescence Safe for use on all turf types and ornamental plants Product

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. 

  • 1 Quart covers up to 64,000 sq ft
  • Analysis is 0-0-5::N-P-K
  • Benefits include - deeper color, increased rooting, pest resistance, drought protection, increased nutrient uptake, and reduced senescence
  • Safe for use on all turf types and ornamental plants

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 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! In addition, this small quart bottle can be stretched up to 64,000 sq ft (see application rates below).

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:

  • Cool-Season Lawns - Kentucky Bluegrass, Turf Type Tall Fescue (all fescues), Ryegrass.
  • Warm-Season Lawns - Bermuda, St Augustine, Zoysia, Centipede, Bahia.
 Coverage

64,000 sq ft at the low rate (1/2 oz/1,000 sq ft)

32,000 sq ft at the higher rate (1 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

  • Label / Specs / SDS / Info: Sea-K Info,  Bio-Stimulant Guide
  • Package Includes: 1 Quart Bottle
  • Storage: Store in a cool, dry place away from direct sunlight. The product can be stored for 2 years under warehouse conditions.

Shipping Information:

Shipping Costs

Included for most states within the U.S.
NO P.O. Boxes

State Restrictions
Alaska (AK), California (CA), Hawaii (HI), and Oregon (OR)
Stickers

Yes, free stickers with this item.

Typical Delivery Time

4 - 7 business days

Product Type

Liquid Concentrate

Cancel | Return | Exchange

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Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 7954289001

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Verified Purchase
M. Merriken
Birmingham, US
★★★★★ 5
Tooth whitener
Flavor Name: A Coconut+Green Tea+Peach
I have used the green bottle so far! As soon as you bite into one, it starts to foam up. I let it foam for a few minutes, and then I brush my teeth. It does freshen your breath and I think it's making my teeth whiter! I have not had a chance to try the other flavors yet. The flavor is mild but good! It is fun to use!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 26, 2026
R
Verified Purchase
Ricky
Dallas, US
★★★★★ 3
See review
Flavor Name: A Coconut+Green Tea+Peach
These are very interesting. They work very fast like they said. The taste isnt bad so far ive tried the peach and its nice and strong. Only thing id say is its not like brushing your teeth like it claims its more of like a stronger breath mint that foams. Other than that id say its a great mint and product as a mint that you need to spit out haha. I look forward to using them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 16, 2026
S
Verified Purchase
SophiaSnacks
Draper, US
★★★★★ 5
Buy them!!!
Flavor Name: A Coconut+Green Tea+Peach, Flavor Name: A Coconut+Green Tea+Peach
I just tried the peach one and it was really good!! Definitely feels fresh and clean
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
S
Verified Purchase
Sheryl
Belleville, US
★★★★★ 1
Don’t waste your money.
These are horrible tasting …not even able to keep it in my mouth. Four people, including myself, tried them and everyone spit it out immediately. Don’t waste your money.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 10, 2026
D
Verified Purchase
Daylily
Massapequa, US
★★★★★ 5
Wow. Explosion of froth and mouthwash in one little tablet.
Flavor Name: 2-Bottle Green Tea
I love these for travel, and put some in a tiny container in my purse, too. You just have to spit it out - no rinse necessary. I might try a different flavor than the green tea. Don't love it, but do love the product.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 9, 2026

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