LESCO 5-0-20 Stress Fertilizer bag with product details on a grassy background
lesco-5-0-20
Chart detailing the best time to apply LESCO 5-0-20 for cool-season and warm-season lawns.
Lawn care application guide with text and icons on a grassy background
Promotional graphic for LESCO fertilizer highlighting key benefits for stressful conditions with a green field background.
LESCO 5-0-20 Stress Fertilizer bag with product details on a grassy background
lesco-5-0-20
Chart detailing the best time to apply LESCO 5-0-20 for cool-season and warm-season lawns.
Lawn care application guide with text and icons on a grassy background
Promotional graphic for LESCO fertilizer highlighting key benefits for stressful conditions with a green field background.
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LESCO 5-0-20 Lawn Fertilizer

LESCO 5-0-20 Spar-TECH MOP BIO Fertilizer is built to help lawns stay stronger during heat, drought, traffic, and seasonal changes. It’s a great choice when your lawn needs stress support, better color, and potassium without a heavy nitrogen push.
  • Strengthens lawns during heat, drought, and seasonal stress
  • High in potassium to support stronger, tougher turf
  • Great for summer feeding and fall lawn prep
$79.99

Apply in: Summer for cool seasonl lawns, Fall on warm season lawns every 6–weeks

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Low nitrogen. High potassium. Built for heat, drought, and seasonal transitions.

LESCO® 5-0-20 Spar-TECH™ MOP BIO Fertilizer is a professional-grade stress blend designed to strengthen turf without forcing excessive top growth. With 20% soluble potash, added iron, and biosolids for organic support, this formula helps lawns handle heat, drought, traffic, and seasonal change with improved resilience and color.

This is an ideal fertilizer when nitrogen demand is lower but potassium becomes critical for root strength, cellular structure, and overall turf durability.

Why Choose 5-0-20 Spar-TECH™

  • 5-0-20 Analysis: Builds turf strength without surge growth.
  • High Potassium (20% K₂O): Enhances drought tolerance, stress resistance, and root development.
  • Spar-TECH™ Micronutrient Technology: Improves nutrient uptake efficiency.
  • 0.15% Iron: Enhances natural green color without excessive nitrogen push.
  • Biosolids: Adds organic matter and slow-release nitrogen for soil health.
  • Professional SGN 230 Granule: Consistent spread and uniform coverage.

Best Time to Apply

Cool-Season Lawns (Tall Fescue, Kentucky Bluegrass, Ryegrass)

  • Summer (June–August): Maintains strength and color during heat stress.
  • Fall (October–November): Prepares turf for winter dormancy and disease resistance.

Warm-Season Lawns (Bermuda, Zoysia, St. Augustine)

  • Late Summer to Fall (August–October): Strengthens turf as nitrogen demand declines.
  • Early Spring (Southern Zones): Supports recovery before high-nitrogen programs begin.

Guaranteed Analysis

  • Total Nitrogen (N): 5.00%
    • 4.61% Urea Nitrogen
    • 0.12% Other Water Soluble Organic Nitrogen
    • 0.27% Water Insoluble Nitrogen
  • Soluble Potash (K₂O): 20.00%
  • Iron (Fe): 0.15%
  • Derived From: Urea, Muriate of Potash, Iron Amino Acid Complex, Biosolids

Application Guidelines

  • Apply 5 lbs per 1,000 sq ft
  • Use rotary spreaders only
  • Water in after application
  • Avoid mowing immediately after spreading
  • Sweep granules off hard surfaces to prevent staining

Coverage

  • 50 lb Bag: Covers up to 10,000 sq ft

Pro Strategy

Use higher-nitrogen fertilizers earlier in the growing season to drive growth. Transition to 5-0-20 during heat or late-season periods to harden turf, improve root strength, and enhance stress tolerance without pushing excessive leaf growth.

LESCO® 5-0-20 Spar-TECH™ is a professional-grade stress fertilizer built to keep turf strong when conditions are toughest.

Key Value
Lawn Types Tall fescue, Bermuda, St. augustine, Centipede, Zoysia, Kentucky bluegrass, Ryegrass
Special Features Slow-release plus iron
Application Rate 5 lbs. per 1,000 sqft
Time to Apply Spring, Summer, Fall, Winter
Delivery System Granules
Brand Lesco
For Use In Turf Grass
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