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

N-Ext RGS Root Growth Stimulant

RGS™ (Root Growth Stimulant) is a liquid bio-stimulant formulated to strengthen turf from the ground up by stimulating root growth, improving soil structure, increasing stress tolerance, and supporting microbial activity. It is the foundational product in all Yard Mastery and Lawn Care Nut lawn care programs.

Formulated by John Perry of Greene County Fertilizer Company, RGS combines two of the most researched and trusted bio-stimulants in turf management: sea kelp extract and humic acid. This combination enhances rooting, improves nutrient availability, buffers fertilizer applications, and supports long-term soil health.

RGS is ideal for DIY homeowners looking to build stronger roots, improve fertilizer efficiency, and maintain healthier lawns throughout the growing season. It cannot burn the lawn and is safe for repeated use.

Key Benefits 

• Stimulates deeper root growth — Sea kelp plant hormones drive root development so your lawn can better access water and nutrients during heat, drought, and heavy traffic.
  
• Improves soil structure and microbial activity — Humic acid feeds beneficial soil biology, creating a healthier environment beneath the surface for long-term turf health.
  
• Increases stress tolerance — Helps turf recover faster from heat, cold, foot traffic, and seasonal transitions.
  
• Improves nutrient uptake and fertilizer efficiency — Unlocks nutrients already in your soil and gets more value from every fertilizer application you make.
  
• Buffers fertilizer applications — Reduces the risk of burn and creates a safer feeding environment for your lawn.
  
• Cannot burn the lawn — Safe for repeated use throughout the entire growing season with no risk of turf damage.
  
• Compatible with all grass types — Works on all major cool-season and warm-season turfgrasses.
  

Size Options & Coverage

• Quart (32 oz): Covers up to 10,650 sq ft
  
• 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
  

Application Information 

• Apply 3-6 oz per 1,000 sq ft with 1 gallon of water
• Spray evenly using a hose-end, backpack, or pump sprayer
  
• Water into the soil within 24 hours with 1/4" of rainfall or irrigation
• Apply every 30–45 days or as recommended in your lawn care program
• Can be applied anytime during the spring, summer, or fall 
• Do not apply to saturated soil
• Safe for cool-season grasses such as fescue, Kentucky bluegrass, and ryegrass
• Safe for warm-season grasses such as Bermuda, St. Augustine, Zoysia, centipede, and Bahia
  
• Rinse excess product from sidewalks, driveways, and other hard surfaces to help prevent staining