0-0-1 RGS Root Growth Bio-Stimulant, Sea Kelp | N-Ext - NC Grass Plugs
0-0-1 RGS Root Growth Bio-Stimulant, Sea Kelp | N-Ext
0-0-1 RGS Root Growth Bio-Stimulant, Sea Kelp | N-Ext
0-0-1 RGS Root Growth Bio-Stimulant, Sea Kelp | N-Ext
0-0-1 RGS Root Growth Bio-Stimulant, Sea Kelp | N-Ext

0-0-1 RGS Root Growth Bio-Stimulant, Sea Kelp | N-Ext

Regular price $24.99 $0.00 Unit price per
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[N-Ext] RGS™ - RGS stands for Root Growth Stimulant and that’s exactly what it does. This biostimulant 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.

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.

*Available in multiple sizes: Size options on this item are 1 quart, or 1, 2 and 4-gallon

  • 1 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 most cost-effective option

Application Information:

You will need to water in RGS if you apply with a backpack/pump sprayer.
Can be applied at any time during the growing season for cool and warm-season lawns. 

RGS 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.


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
  • Package Includes: One Quart, and One, Two, or Four Single Gallon(s) based on selection
  • Storage: Store in a cool dry place away from direct sunlight. The product will store 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), Hawaii (HI), and Oregon (OR)
Typical Delivery Time

4 - 7 business days

Product Type

Liquid Concentrate

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Customer Reviews

Based on 4 reviews
Robin Chambers

0-0-1 RGS Root Growth Bio-Stimulant, Sea Kelp | N-Ext

Jennifer Brantley
Great Service

Excellent customer service and product knowledge

Carmichael Phillips

Excellent service and knowledge

Paul Wade
Root Growth Stimulant

RGS has been a proven go-to for the success of my lawn. The quart sized hose end sprayer makes it so easy to apply.