Potassium Boost Liquid Fertilizer
$30
42 fl. oz. pouch + hose end sprayer. Covers up to 3,000 sq. ft.

Premium liquid lawn fertilizer — potassium
Elevate your lawn's potassium levels while optimizing water management and enhancing heat resilience.
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Your lawn's favorite potassium fertilizer
Potassium Boost Liquid Fertilizer is a 0-0-20 formula built for potassium-deficient lawns. With 20% potassium and seaweed extract, it helps your grass hold water, handle summer heat, and grow stronger roots. Works on all grass types. Pair it with Iron Boost for deeper color, or start with a custom lawn plan to see what your yard needs.
What makes Potassium Boost Liquid Fertilizer different
- 0-0-20 formula targets potassium deficiency
- Seaweed extract supports stronger root growth
- Hooks up to your hose, done in 10-15 minutes
- Works on all lawn and grass types
- Helps your lawn hold water and handle heat
- Formulated without pesticides
Ingredients
Potassium (20%): The nutrient that helps your grass stand tall, manage water, and push through heat and drought stress without wilting.
Seaweed extract: A natural source of micronutrients that supports root development and helps your lawn absorb what it needs from the soil.
How to use
Apply early morning or evening when your lawn is hydrated. Skip it if your grass is drought-stressed or dealing with extreme heat.
- Connect the sprayer to your hose and attach the 42 fl oz pouch.
- Turn on the water and walk your lawn at an even pace.
- Apply across the entire lawn until the pouch is empty, about 10-15 minutes. One pouch covers up to 3,000 sq ft.
- Reapply every 4-6 weeks from spring through fall.
























