SKU: 49384922261
plant root growth fertilizer

plant root growth fertilizer N-Ext RGS

Sale price$23.62 Regular price$26.25
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Ships within 48 hours · Estimated delivery Jul 23 - Jul 28

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Description

plant root growth fertilizer N-Ext RGSN Ext RGS RGS Stands for Root Growth Stimulant, and thats exactly what it does. This bio stimulant is packed with hormones from sea kelp that stimulate roots and stolons rhizomes coupled with chelating humic acid. One gallon covers up to 42,600 sq ft Root Growth Stimulant (with Humic Acid and Sea Kelp) Great for soil health and root stimulation Available in multiple sizes* Product Description: RGS Root Growth Stimulant with sea kelp and humic acid is

N-Ext RGS™ - RGS Stands for Root Growth Stimulant, and that’s exactly what it does. This bio-stimulant is packed with hormones from sea kelp that stimulate roots and stolons/rhizomes coupled with chelating humic acid.

  • One gallon covers up to 42,600 sq ft
  • Root Growth Stimulant (with Humic Acid and Sea Kelp)
  • Great for soil health and root stimulation
  • Available in multiple sizes*

Product Description:

RGS™ - Root Growth Stimulant with sea kelp and humic acid is our primary bio-stimulant offering for use in lawns and landscapes. Formulated by John Perry of Greene County Fertilizer Co, RGS is the foundation of all Lawn Care Nut and Yard Mastery programs.

If you are new to spraying liquids on your lawn, this is a great one to start with. It won't "burn" the lawn or anything like that - and RGS is the best to start with anyway since it aids in soil health and stimulates roots in turf.

If you have challenges with your grass holding on during summer heat, getting RGS into the soil will help it through the stress. RGS is truly the backbone of the bio-stimulant program, hands down, and has the highest concentration of sea kelp hormones in the line. It was designed to increase rooting and decrease stress pressure caused by heat and drought. It will also feed microbial life in the soil which helps to optimize your fertilizer treatments.

"N-Ext" is the name of this line of products, and N-Ext stands for "Nitrogen Extension." RGS, Root Growth Stimulant, is kind of like the "base layer" of that line because it contains humic acid and sea kelp, the two primary bio-stimulants we recommend. The biologically active material contains humic acid and sea kelp to aid in initial spring green-up, buffer and extend nitrogen release rates, and add oxygen to the soil profile for greater nutrient uptake.

*Size options and coverage: 

  • 1 Single Quart (32 oz) = covers up to 10,650 sq ft
  • 1 Single Gallon (128 oz) = covers up to 42,600 sq ft
  • 2 Gallon Pack (256 oz) = covers up to 85,200 sq ft
  • 4 Gallon Pack (512 oz) = covers up to 170,400 sq ft 
  • 5 Gallon Pack (640 oz) = covers up to 213,000 sq ft  

You can SAVE MONEY with the “mix and match” in our Build-a-Box options

Check out all of our other Greene County products here!

Application Information:
You will need to water in RGS if you apply with a backpack/pump sprayer. If you are using a quart hose-end sprayer, here is a video with instructions. 

RGS can be applied at any time during the growing season 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.

Custom bio-stimulant timing and recommendations are available in the free Yard Mastery app. Click here to download.

 Coverage/Gallon

42,600 sq ft at the low rate (3 oz/1,000 sq ft)
21,300 sq ft at the high rate (6 oz/1,000 sq ft)

Application  Details

Mix 3 oz- 6 oz per gallon of water in a backpack/pump sprayer and spray that evenly across 1,000 sq ft of lawn.

Apply every 30-45 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: RGS Info
  • Link to Bio-Stimulant Guide
  • Package Includes: Quart, One, Two, Four Single Gallon(s), or 5-Gallon (two 2.5-gallon bottles) based on selection.
  • 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, a free sticker 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:
  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: 49384922261

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4.0 ★★★★★
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Verified Purchase
Sherry Sharpnack
San Leandro, US
★★★★★ 4
Enjoyable Scottish-Flavored Cozy Mystery, Although Not a Hard Solve
Format: Kindle
Ally is a 60-something-year-old woman who upends her life in Edinburgh to move to tiny Locharran in the Scottish Highlands and open a B&B in the old malthouse located on the estate (like the rest of the town) of the Earl of Locharran, Hamish Sinclair. She has her first paying guests in an older, English couple, and an American, Wilbur Carrington, who is investigating his Scottish roots -- and possibly his being the rightful Earl of Locharran? Ally's cleaning lady finds Wilbur with a knife in his back outside the B&B. This is sure gonna' affect Ally's brand-new business! Of course, her kids back in Edinburgh are concerned for her safety as well. Along with the lecherous earl's attention to Ally, the murder at the local B&B makes Ally the intense focus of local gossip, so this spurs her into attempting to solve the murder herself, as the local gendarmes don't seem to be having much luck. So...whodunnit? As soon as more folks showed up on the scene, renting rooms for Ally, the identity of the murderer(s?) became more clear. I still enjoyed the descriptions of the scenery; the new lab puppy; and the townfolk, even though this "Scottish" mystery was obviously written for an American audience w/ many stereotypes thrown in. 4 stars.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2025
L
Verified Purchase
Lynn Miller
Battle Creek, US
★★★★★ 5
Great cozy mystery series
Format: Kindle
I love that the main character is an energetic independent older woman I can relate to. Ally is funny, smart, and says what’s on her mind and even at her age (late 60’s) has to deal with Romantic situations some encouraged and some definitely not. I totally enjoyed this book couldn’t put it down and plan to read the remaining books in this series. The book definitely keeps your interest from the first chapter on. I loved that the setting was in Scotland (I’m part Scottish) and it was describe so beautifully I almost felt like I was there.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 30, 2025
E
Verified Purchase
Edna Roshandel
Louisville, US
★★★★★ 5
Enjoyable read
Format: Paperback
This was a fun read
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Reviewed in the United States on February 3, 2026
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Verified Purchase
Lanu
Boise, US
★★★★★ 4
Sorry that I was not much of a fan, especially not a fan of the narrator.
Format: Audiobook
I read this with my book club. Mixed reviews...some liked it and some of us not so much. Nobody really wanted to continue reading this series. The story was not very intriguing, and the book dragged on. The narrator was not very good, so it spoiled the experience. I will not continue to read the series.
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Reviewed in the United States on November 26, 2025
B
Verified Purchase
B. Mulder
Louisville, US
★★★★★ 5
Worked well near the equator
Style: SPF 50
I bought this product because I was going to be in the field for a month, outside, every day, all day, in Tanzania at high altitude. A severe sunburn would be hard to treat in the remote area we were in, but also I am very careful about protecting my skin from aging. I had to have mineral based sunscreen because as a whitewater kayaker I know it’s the only truly water resistant kind and it was going to be sweaty. And since I knew I was going to be putting it on every day, and we didn’t have running water in the field (bucket showers only) I didn’t want it to feel gross. (I really wanted to try the spray but I didn’t want to put anything pressurized in my luggage.) And I had already discovered the Coola face sunscreen (30spf version) which had impressed me with how silky smooth and not greasy it is. Now this IS greasier because it is a higher SPF. BUT I think this product is as good as you’re going to get with the protection you’re getting. Like I said, I’m a white water tiger, so I have used a LOT of mineral sunscreens. This was hands down the most comfortable one I’ve used. And it was effective. I didn’t burn once—only time I did burn was when I forgot to put it on one day toward the end of the trip, when we were out for just a couple hours—and I got the first 2nd degree burn I’ve ever had in my life. That was what this stuff had protected me from, all day every day, the entire trip. I did tan a little but I think that was mostly from the few times I was not covered during short bouts or it was cloudy. For my face I used the Coola 50spf face product.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 7, 2022

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