16-21-2 GreenePOP Starter Fertilizer | N-Ext

N-Ext GreenePOP™ 16-21-2 Liquid Starter Fertilizer for Seeding & Sodding

N-Ext 16-21-2 GreenePOP™ is a complete liquid starter fertilizer designed to support grass seed germination, sod establishment, and strong early root development. It provides nitrogen, phosphorus, potassium, micronutrients, humic acid, and sea kelp to help new turf get established and start growing on the right foot.

GreenePOP is an excellent foundation product for seeding or sodding a lawn. It can be applied directly over grass seed, to bare soil before installing sod, or incorporated into a topdressing medium. It can also be used on established lawns when a soil test identifies a phosphorus deficiency or when additional starter fertilizer support is needed.

The formula also includes potassium hydroxide, which provides liquid aeration to help create space in the soil. Humic acid supports carbon availability and nutrient movement, while sea kelp helps support beneficial microbial activity and newly developing turf roots.

Product Label & Specs 

Key Benefits

• Supports grass seed germination and sod establishment
  
• Provides complete starter nutrition with a 16-21-2 N-P-K analysis
  
• Contains nitrogen, phosphorus, potassium, micronutrients, humic acid, and sea kelp
  
• Helps promote strong root mass and deeper root development
  
• Includes liquid aeration to help create space in the soil
  
• Helps prepare the soil around grass seed for establishment
  
• Can be applied directly over seed or to bare soil before sodding
  
• May be used on established lawns with phosphorus-deficient soil
  
• Works on cool-season and warm-season grass types
  
• Easy to apply with a backpack sprayer, pump sprayer, or hose-end sprayer
  
• Available in multiple sizes
  

Size Options and Coverage

• Quart (32 oz): Covers up to 2,000 sq. ft.
  
• Gallon (128 oz): Covers up to 8,500 sq. ft.
  
• 2-Gallon Pack (256 oz): Covers up to 17,000 sq. ft.
  
• 4-Gallon Pack (512 oz): Covers up to 34,000 sq. ft.
  
• 5-Gallon Pack (640 oz): Covers up to 42,500 sq. ft.
  

Application Information

• Apply 16 oz of GreenePOP per 1,000 sq. ft.
  
• For backpack or pump sprayers, mix the recommended amount with 2 gallons of water, apply evenly across 1,000 sq. ft., and water in for 5 minutes.
  
• For seeding, apply GreenePOP directly over grass seed and water thoroughly.
  
• For sodding, apply GreenePOP to the bare soil before installing sod, then water thoroughly after installation.
  
• GreenePOP may also be incorporated into a topdressing medium before application.
  
• Repeat the seeding or sodding application approximately 15 days later.
  
• Water GreenePOP into the soil within 24 hours with at least ½ inch of rainfall or irrigation.
  
• Can be applied during the growing season to both cool-season and warm-season lawns.
• Do not apply to saturated soil.
  
• Rinse excess product from sidewalks, driveways, and other hard surfaces to help prevent staining.