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Heat Defense Granular 21-0-3 (12 lb)

One 12 lb bag covers up to 4,000 sq ft

LAWN PLAN EXCLUSIVE

Orange and green bag of Heat Defense Granular Fertilizer

Heat-season backup in one spread.

A 21-0-3 NPK granular fertilizer that improves water movement and moisture retention for steady greening and summer-season support, in one easy spread.

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LAWN PLAN EXCLUSIVE

Orange and green bag of Heat Defense Granular Fertilizer

The granular fertilizer built for hot, dry days

Heat Defense Granular is a 21-0-3 summer lawn fertilizer with a built-in surfactant that helps water move into soil and reach roots evenly. Recycled leaf compost builds organic matter for healthier soil. Works on all grass types. One spread, one watering, done. Pair it with Drought Defense to cut down on dry spells, or build a Custom Lawn Plan for your yard.

What makes Heat Defense Granular different

  • 21-0-3 NPK for steady greening and growth
  • Built-in surfactant helps water reach roots
  • Recycled leaf compost builds organic matter
  • One spread, one watering, done
  • Works on all grass types and climates
  • Zero pesticide fertilizer, nothing extra

Ingredients

Nitrogen (21%): Drives steady growth and greener color all season.
Potassium (3%): Helps your lawn handle heat stress and bounce back from dry spells.
Calcium: Supports stronger blade structure so grass stands up to summer wear.
Sulfur: Supports healthy growth and helps your lawn take in other nutrients.
Surfactant: Helps water move into soil and reach roots more evenly, especially in dry or compacted ground.
Leaf compost (recycled): Builds organic matter and supports healthier soil from the ground up.

How to use

Apply in late spring before summer heat arrives, or before a forecasted dry spell. Also great when temps are climbing and your lawn needs a hand.

  1. Fill your spreader with Heat Defense Granular.
  2. Spread evenly across your lawn for full coverage.
  3. Water in after applying.
  4. Let the lawn dry before walking on it.
  5. Look for greener, steadier growth in 1 to 2 weeks with good moisture.

When should I apply Heat Defense Granular?

Heat Defense Granular works best when applied in late spring, right before summer heat sets in. You can also apply it ahead of a forecasted dry spell to give your lawn a head start.

If you are already seeing hot temps, apply in the morning or evening when it is cooler and water in right after.

Can I apply Heat Defense Granular when it is over 90 degrees?

Heat Defense Granular is designed for hot conditions. Apply in the early morning or evening when temps are lower, then water in thoroughly.

The built-in surfactant helps water reach roots even when soil is dry.

How soon will I see results with Heat Defense Granular?

Heat Defense Granular typically shows greener, thicker growth in about 1 to 2 weeks with good moisture. Water in after applying and keep your regular watering schedule for best results.

Is Heat Defense Granular safe for all grass types?

Heat Defense Granular works on all grass types, warm season and cool season. It was designed with the arid West in mind, but it performs well on any lawn.

Will Heat Defense Granular burn my lawn?

Heat Defense Granular is a zero pesticide, 21-0-3 NPK granular fertilizer formulated for summer conditions. Apply evenly with a spreader and water in after applying to help the granules activate without stressing your grass.

What does the surfactant in Heat Defense Granular do?

The surfactant in Heat Defense Granular helps water move into soil and reach roots more evenly. This is especially helpful in arid regions or on compacted ground where water tends to run off instead of soaking in.

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Customer reviews

Based on 1 review!
Brandon
Granular for everyone

All the Sunday product yeild. good results. Love that this is a granular! Make available to everone.

Published date
06/06/26
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