SKU: 83792439014
sea kelp plant fertilizer

sea kelp plant fertilizer N-Ext Sea-K (Sea Kelp for Lawns) 0-0-5 Stress Reducer, Bloom and Root – Yard Mastery

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Description

sea kelp plant 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

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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:
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  • 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: 83792439014

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David O. Hoagland
Houston, US
★★★★★ 4
Vintage 60's cool, but sizing is a difficult decision
I can't believe I haven't owned one of these for the last 40 years or so. To put one on after all these years takes one right back to the questionable days of one's youth when you wore these bare chested underneath while tooling around on your Kawasaki 500 triple. Well it will take you back if you haven't let yourself go too far! I received both a large and a medium in black (love the free returns on clothing, I always order two sizes so I get the right fit). They are both made in Mexico and look very neat and well made, the denim is on the thin side but OK for warm weather. Nowhere is there any tag saying shrink to fit or shrinks two sizes. The tag says machine wash cold, tumble dry medium. The large is quite large on me (I'm 5'9" 168 lbs trim and athletic build, more often than not I wear large in T shirts and jackets), the sleeves are way too long and loose, body too long and loose. Would have to shrink drastically to fit me, I really doubt it would shrink anywhere near that much. This type jacket is just all wrong if it's too loose fitting, witness the BLACK color one in the model photos, just not too cool. The medium fits much much smaller but IMHO perfect for this style jacket, a classic fit like Steve McQueen or Robert Plant would have sported, high waist and tight shoulders with sleeves rolled back a little. If you look at the model in the 'HARRINGTON' color you have the idea. It will be totally bitchen on today's big black BMW oilhead. This is the youthful fit I was looking for but any shrinkage would be too much. I am conflicted because I would like to wash this jacket and break it in, put a little wear and tear on it. But I wouldn't dare dry it with heat. I might try washing it in cold water and then line dry or I may just dry clean it. I am tempted to go out and drag it up and down the gravel driveway and run it over with my truck a few times till it acquires some of the same attitude it inspires in me. All I need now is a Psychedelic soundtrack and I'm all set to relive the glory days, better than the first time around. A little research on the Levi's website reveals they have a regular fit and a slim fit in addition to this relaxed fit which is the only one available on Amazon. I find that this relaxed version works well in the medium size anyway, it seems to be relaxed only in the body, not so much in shoulders or sleeves.
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Reviewed in the United States on January 3, 2015
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OPPY
Massapequa, US
★★★★★ 5
Fit True to Size
Special Size Type: Standard, Size: Medium, Color: (New) in the Sandbox
Good quality you'd expect from Levis. Fit on the very slightly snug size of true to size. Very nice jacket.
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Reviewed in the United States on May 31, 2026
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tangent
San Leandro, US
★★★★★ 5
Large fits well, comfortable, though a bit more flex to it than expected
Special Size Type: Standard, Size: Large, Color: Colusa/Stretch
Very nice, though it is stretchier than expected. I purchased a large. The fit is good for me at 5'11" / 200lb, average build. My shoulders are a bit broader than most and the fit is maybe just a weeeeee bit tight, under the arm when reaching for something. The arm length and overall length are both great. This will be a mid-season jacket so I do not plan to wear a hoody or other bulky item under it. It would work, but I think a bit too snug for me. I reccomend washing it immeidately then taking a hot iron with steam to the pockets and collar which I feared were trying to start and curl up. They need to be trained early! I am more pleased than expected.
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Reviewed in the United States on March 30, 2025
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Nick
Los Angeles, US
★★★★★ 5
TRIED OTHER DENIM JACKETS LEVI THE ONLY WAY
This jacket is exactly what I was hoping for timeless, clean, and super versatile. The black denim looks sharp and goes with everything, from jeans to chinos. The fit is true to size and hits that perfect spot between fitted and comfortable. I can move around easily without it feeling stiff, and it breaks in nicely after a few wears. The quality really stands out — solid stitching, durable buttons, and that signature Levi’s structure that just looks good no matter how you style it. It’s warm enough for cool days but still light enough to wear indoors or layer over a hoodie. Im 180lbs 6’2 for reference, If you’re after that classic denim jacket look that never goes out of style, this one’s it. I get compliments every time I wear it. Also I’ve owned it a year now and it still looks great.
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Reviewed in the United States on November 2, 2025
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Walk412
Louisville, US
★★★★★ 5
Levi Sun Surf Type 3 Denim Trucker Jacket - Med Wash
Special Size Type: Standard, Size: Medium, Color: (New) Sun Surf, Special Size Type: Standard, Size: Medium, Color: (New) Sun Surf
Levi Type 3 Trucker jackets are the best you can buy. Every one should own a couple of these. I have every color of the Premium versions, that I bought straight from Levi. I've been wanting to try this Sun Surf type 3 from Amazon for a while now. I bought this one to wear over my hoodies on the cooler days and nights, because of its wide body fit. It's not as slim as the Premiums, but it's just as official. It's super soft and lightweight. The fit and appearance is on point. It looks just like the pictures. Love it! I might get a dark wash as well. Amazon + Levi for the win again!
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Reviewed in the United States on May 15, 2026

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