Lesco 18-3-6 liquid fertilizer features
lesco greenflo fertilizer 18-3-6 bottle
Lesco 18-3-6 liquid fertilizer features
lesco greenflo fertilizer 18-3-6 bottle
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LESCO Green Flo 18-3-6 Liquid Fertilizer

LESCO Green Flo 18-3-6 Liquid Fertilizer provides professional-grade liquid nutrition with 50% controlled-release nitrogen for steady feeding and long-lasting color. Its balanced 18-3-6 formula supports healthy growth, improved turf appearance, and dependable lawn performance.
  • 50% Controlled-Release Nitrogen
  • Quick Green-Up Plus Extended Feeding
  • Supports Strong Turf Health
  • Easy Liquid Application
$79.99

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Green Flo 18-3-6 delivers fast green-up with iron-enhanced color while providing extended feeding through 50% controlled-release Urea-Triazone nitrogen. Designed for season-long turf maintenance, this all-purpose liquid supports steady growth without excessive surge. Ideal for homeowners...

Green Flo 18-3-6 delivers fast green-up with iron-enhanced color while providing extended feeding through 50% controlled-release Urea-Triazone nitrogen. Designed for season-long turf maintenance, this all-purpose liquid supports steady growth without excessive surge.

Ideal for homeowners and turf managers who want balanced nutrition between granular applications.


Why Choose Green Flo 18-3-6?

  • 18% Nitrogen for strong, steady turf growth
  • 50% Controlled-Release Nitrogen for smoother growth and reduced flush
  • 3% Phosphorus to support root activity
  • 6% Potassium to improve stress tolerance
  • 0.1% Iron for deeper, richer green color
  • 1% Sulfur to support nutrient efficiency

This balanced N-P-K ratio makes 18-3-6 a dependable choice for overall turf health throughout the growing season.


18-3-6 vs 30-0-0 — Which Should You Use?

  • Choose 30-0-0 when you want pure nitrogen control and maximum spoon-feeding precision.
  • Choose 18-3-6 when you want balanced nutrition, added potassium support, and iron-enhanced color in one application.

18-3-6 is ideal for maintaining consistent color and turf performance without pushing excessive growth.


Guaranteed Analysis

  • Total Nitrogen (N) — 18.00% (approximately 50% slowly available via Urea-Triazone technology)
  • Available Phosphate (P₂O₅) — 3.00%
  • Soluble Potash (K₂O) — 6.00%
  • Sulfur (S) — 1.00%
  • Iron (Fe) — 0.10% (including 0.02% chelated iron)

Turf Application Guidelines

  • Spoon-Feeding: Apply every 2–4 weeks during active growth at light-to-moderate rates per label.
  • Between Granular Applications: Use to maintain color without excessive growth.
  • Heat Stress Periods: Favor lighter rates and apply during early morning or evening.

Application Rate

Mix below application rate into 2-4 gallons of water.

  • 0.25 lb N per 1,000 sq ft: 17 fl oz
  • 0.50 lb N per 1,000 sq ft: 34 fl oz

Always calibrate your sprayer and follow label instructions.


Application Notes

  • Apply with hose-end, backpack, battery, or boom sprayer
  • Avoid irrigation for 4–6 hours after foliar application unless label directs otherwise
  • Do not apply during drought stress
  • Avoid overspray on concrete or porous hardscapes to prevent iron staining

Tank Mixing & Compatibility

  • Perform a jar test before combining with micronutrients, pesticides, or wetting agents
  • Follow the most restrictive label when tank mixing
  • Add product to tank after filling halfway with water and agitating

Storage & Safety

  • Store sealed in a cool, shaded location
  • Protect from freezing
  • Wear gloves and eye protection during mixing
  • Keep out of reach of children and pets

Green Flo 18-3-6 provides balanced liquid nutrition with extended feeding and iron-enhanced color for dependable turf performance throughout the growing season.

Key Value
Lawn Types Tall fescue, Bermuda, Zoysia, St. augustine, Kentucky bluegrass, Centipede, Ryegrass
Special Features Slow-release with Iron
Application Rate Rates may vary from .25 to .5 pounds of nitrogen (17 to 34 fluid ounces) per 1000 sq ft in 4 to 6 applications at 8 to 12 week intervals.
Time to Apply Spring, Summer, Fall, Winter
Delivery System Liquid
Brand Lesco
For Use In Turf Grass

Is Green Flo 18-3-6 safe for my grass type?

Yes—when applied per label it’s suitable for most cool- and warm-season turf, including fescue, bluegrass, ryegrass, Bermuda, zoysia, and St. Augustine.

How often should I apply it?

During active growth, many users apply every 2–4 weeks at light-to-moderate rates. Always follow the product label for rate and frequency.

Can I use it between granular applications?

Absolutely. It’s excellent for maintaining color and performance between granular feedings without causing surge growth—thanks to the 50% CRN.

Do I need to water it in?

For foliar uptake, avoid irrigation or rainfall for 4–6 hours unless the label directs otherwise. Some programs also allow a light water-in for soil activity—defer to the label.

Will it stain concrete?

It contains iron, which can stain porous surfaces. Keep spray off driveways, sidewalks, and pavers; rinse off immediately if contact occurs.

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