Potassium Boost Lawn Fertilizer

0-30-0 · Muriate of Potash

Correct low potassium with Potassium Boost. Its nitrogen-free, phosphorus-free formula provides 30% soluble potash to support lawn health and stress tolerance when a soil test indicates a need.

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Made in the USAQuality ingredients

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Support Stronger Turf When Potassium Is Low

Targeted Potassium Nutrition30% Soluble Potash (K₂O)

Correct Low Potassium

Restores potassium nutrition when your soil test shows a deficiency.

Helps Handle Seasonal Stress

Adequate potassium supports turfgrass water regulation through heat, drought, and cold.

Supports Healthy Roots

Potassium supports essential plant functions that help maintain strong, actively growing turf.

No Added Nitrogen or Phosphorus

Target potassium needs without adding nutrients your soil may already have enough of.

30% Soluble Potash

Concentrated potassium (K₂O) for soils that test low in potassium.

0-0-30 Formula

Adds potassium without nitrogen or phosphate.

Soil-Test Guided

A targeted amendment, not a replacement for a complete fertilizer program.

Granular Options

Available in 18, 25 and 50 lb sizes for broadcast application.

Application Rate

3 lb per 1,000 sq ft

Equipment

Use a calibrated broadcast spreader for even granular coverage.

Apply at the Right Time

Apply when soil testing confirms low potassium, according to your turf-type and seasonal fertility plan.

After Application

Water in after spreading. Avoid applying to drought-stressed turf and follow product directions.

Guaranteed Analysis

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Soluble Potash (K₂O)30.00%

Derived From:

Muriate of potash

Spreader Settings

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Find the right starting setting for your spreader.

Spreader Manufacturer Spreader Model

Select your spreader to see the setting.

The 2–3 lb per 1,000 sq ft calculator range is an existing planning band, not a universal prescription. Confirm the correct rate from your soil test and product label. Calibrate the spreader and water in.

Spreader settings & calibration guide →

Documents & Labels

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Product Label

What does Potassium Boost 0-0-30 do for my lawn?

It supplies potassium when your soil is deficient. Potassium is important for water regulation, cell function, turf vigor, and helping lawns tolerate seasonal stress.

What do the numbers 0-0-30 mean?

The fertilizer contains 0% nitrogen, 0% available phosphate, and 30% soluble potash (K₂O). It targets potassium needs without adding nitrogen or phosphorus.

Do I need a soil test before applying 0-0-30?

A soil test is recommended. Potassium Boost is most useful when testing shows potassium is low; extra potassium is unlikely to improve lawns that already have enough.

How much 0-0-30 should I apply?

The current product calculator uses 2–3 lb per 1,000 sq ft as its planning range. Use the rate recommended by your soil test and the product label; spread evenly and water in after application.

When is the best time to apply potassium fertilizer?

Apply when your soil test and seasonal fertilizer plan indicate a need. Avoid fertilizing grass under severe drought or heat stress; follow the directions on the package.

Will 0-0-30 make my lawn darker green right away?

Not necessarily. It does not supply nitrogen, the nutrient most associated with a rapid green-up. It is designed to correct low potassium and support overall turf health.

What is muriate of potash?

Muriate of potash is a potassium chloride fertilizer source used to supply soluble potash. Apply at recommended rates and water in after spreading.

Can I use 0-0-30 with another fertilizer?

Yes, if a soil test shows your lawn needs potassium along with other nutrients. Account for potassium already in any fertilizer you use to avoid overapplication.

Can I apply Potassium Boost to new sod or seed?

Potassium is important during establishment, but the need and correct rate should come from a soil test. Do not treat 0-0-30 as a complete starter fertilizer.

Does 0-0-30 replace a regular fertilizer program?

No. Potassium Boost supplies potassium only. A normal fertility program may also call for nitrogen or other nutrients depending on turf type, growth stage, and soil-test results.

Customer Reviews

Overall rating: 4.0 / 5 from 4 reviews.

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Reviews

Potassium is now in recommended

"Potassium is now in recommended range at 130 lb. /A. Product worked as described"

— Charles K. (5/5)

So far so GOOD! Only

"So far so GOOD! Only time will tell."

— Charles P. (5/5)

No difference

"No difference"

— Joe N. (1/5)

I have a zoysia lawn

"I have a zoysia lawn in north central Texas. Our soil here has a lot of clay. Clay can and does bind up the potassium making it unavailable to the grass. My last two soil analysis have had potassium at 17. 5 of the desired range of 39-72. I purchased Lawn Synergy Potassium boost 0-0-30 to supplement my regular lawn fertilizer. It’s mid May and my Zoysia is starting to green up nicely as you can see in my photo and should continue to do so as it continues to warm up. I very pleased of the results of the application of Lawn Synergy potassium"

— Earl B. (5/5)

Q&A

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