SKU: 29785185959
plant root development fertilizer

plant root development fertilizer N-Ext RGS

Sale price$19.58 Regular price$21.76
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Ships within 48 hours · Estimated delivery Jul 19 - Jul 24

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For Your Every Summer RSVP, with Code: SUMMER15

Description

plant root development 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 Analysis is 0 0 1:: N P K Root Growth Stimulant (with humic acid and sea kelp) Great for soil health and root stimulation Available in multiple sizes* Product Description: RGS is a root growth stimulant

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
  • Analysis is 0-0-1::N-P-K
  • Root Growth Stimulant (with humic acid and sea kelp)
  • Great for soil health and root stimulation
  • Available in multiple sizes*

Product Description:

RGS is a 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 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 our 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 / Info: RGS Info,  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]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 29785185959

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Tim
Port Orchard, US
★★★★★ 4
A Good Casual Shirt
Color: Wine Red, Size: Large
This shirt is just what I was looking for. A relatively cheap, casual button down for summer outings, brunches, and dinner. It fit well, but is a little slim around the waste so I would maybe size-up. I got a large and it feels more like a medium around the waste, but the length is good. The material is definitely cheap but cool enough for the summer, and more casual than some of my other button downs that I felt overdressed with. For the price you really can't complain. You don't have to worry about ruining it, but it looks high quality than it is.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 28, 2026
N
Nathaniel Ramos
Natrona Heights, US
★★★★★ 5
Comfortable Stretch Shirt with a Clean, Fitted Look for Everyday Wear
Color: Black, Size: Large
This short sleeve button-down shirt is made from a lightweight fabric with a soft texture and noticeable stretch, giving it a flexible and easy-to-wear construction. The material drapes cleanly and maintains a structured appearance during regular use. The fit is tailored with a more defined cut through the chest and sleeves, creating a streamlined silhouette. The fabric holds its shape well and shows limited wrinkling compared to heavier woven materials, helping it maintain a neat appearance over time. Stitching and construction appear solid, with consistent button alignment and secure seams throughout. The collar retains its structure after repeated wear, and the overall build quality remains stable after multiple uses and washes. The fabric composition allows for a lighter overall feel, and the design works well across different styling combinations depending on the setting. Overall, it is a well-constructed button-down shirt with a tailored fit, flexible fabric design, and consistent build quality suitable for regular use.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 21, 2026
E
EverydayConsumerEddy
Houston, US
★★★★★ 5
Comfortable everyday shirt with a clean fit and great price
Color: Light Grey, Size: Medium
This is a really comfortable short sleeve button down that feels easy to wear right out of the package. The material has a nice stretch to it which makes it move with you instead of feeling stiff, and it lays nicely on the body for a more fitted but still relaxed look. It keeps a pretty clean shape throughout the day and does not wrinkle too badly compared to heavier shirts, which helps it look put together without much effort. The fit is one of the better parts since it sits well through the chest and shoulders without feeling tight, and the sleeves have a nice taper that gives it a more modern look. Stitching and overall construction feel solid, and the buttons and seams seem secure and well aligned. It works well for casual wear or even a more dressed up casual office setting depending on how you style it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 23, 2026
R
RJ
Port Orchard, US
★★★★★ 3
Decent fit, comfortable, but washed out black color
Color: Black, Size: Large, Color: Black, Size: Large
This shirt fits well and sits comfortably through the shoulders and chest. The stretch in the material helps it move easily, and the cut works fine for casual or office use. The overall feel is straightforward and easy to wear. The black color is more like a washed or faded black rather than the rich black I was expecting. It doesn’t have that deep tone that stands out, and the material itself doesn’t give off a premium impression. It still works fine for regular wear and doesn’t cause any issues while moving around. Even with the lighter black tone and the average material, the fit and comfort make it a decent shirt for everyday use or simple business‑casual outfits.
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Reviewed in the United States on April 20, 2026
K
KH86
Bozeman, US
★★★★★ 5
Mens Muscle Fit Short Sleeve Button Down Dress Shirt
Color: Light Blue, Size: Small
This shirt feels light and comfortable, with a soft stretch that makes it easy to move in. The muscle‑fit cut highlights the chest and shoulders without feeling tight, giving it a clean, modern look. The fabric stays breathable on warm days, and the short‑sleeve button‑down style works well for office wear or casual outings. It pairs easily with jeans or dress pants. Pros: - Soft, stretchy fabric for comfort - Athletic muscle‑fit silhouette - Breathable for summer wear - Versatile business‑casual style - Works well for office, travel, or weekends Cons: - Fabric is thin, so an undershirt may be needed - Fit runs snug across the chest for some Summary: A lightweight, stretchy summer shirt that gives a clean, fitted look for work or casual days.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026

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