Pile of SmartPhos 4-22-0 Lawn Fertilizer

SmartPhos 4-22-0 Lawn Fertilizer CFallouts

SmartPhos comparison gif showing penetrates root zone

SmartPhos 4-22-0 Fertilizer Use Ahead of Nutrient Blackout Periods

SmartPhos particle size comparison image

SmartPhos 4-22-0 Lawn Fertilizer is Made in the U.S.A.

SmartPhos DG^® 4-22-0

Name: SmartPhos DG® 4-22-0
Brand: The Andersons Home & Garden
SKU: 10009276
Price: 69.88 USD
Availability: InStock

Lawn Fertilizer

Covers up to: 7,800 sq. ft.

7,800 sq. ft.

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Made in the USA

Overview

A professional-grade high-phosphorus fertilizer derived from struvite, an innovative phosphorus source
Made with patented SmartPhos® technology which allows for balanced, slow-release nutrition
Highly plant-available, offering nutrients that can be readily absorbed
Phosphorus will not leach or tie-up in soil
Not impacted by soil pH
Ideal fertilizer for use on newly planted lawns and mature lawns with low phosphorus levels
Recommended to use ahead of nutrient blackout periods
Extremely small particle size for double the coverage
Made with patented DG Technology

Documents

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Why the Pros Love It

Patented SmartPhos® Technology

Unlike traditional phosphorus products, SmartPhos is made with struvite and utilizes our patented technology. The result is a formula that offers low water solubility, allowing for a slow, steady supply of nutrients over an extended period of time without losing plant availability. This ensures the nutrients released over time are able to be used by the plant. SmartPhos will remain stable, eliminating the risk of nutrients being leached or tied-up in the soil.

Small Particle Size

SmartPhos DG 4-22-0 is made with an extremely small particle and includes The Andersons patented DG Technology. Upon contact with water, each granule disperses into thousands of microparticles that quickly move through the turf canopy into the root zone for superior coverage and enhanced efficacy.

Ideal for Seeding

SmartPhos has a low salt index so it won't burn new seedlings and can be used at half the rate of traditional starter fertilizers while delivering the same results. It can also be used in mature lawns with low phosphorus levels.

How to Apply SmartPhos

Apply at the LOW to HIGH rates during the growing season or for seeding
Use the LOW or MEDIUM rate during mid-summer
For bentgrass and poa annua, apply at the low rate if temperatures are 85˚F or above
For mature lawns with phosphorus deficiencies, apply once in the spring and once in the fall
Reapply every 4-6 weeks when establishing a new lawn
Apply ahead of nutrient blackout periods
For container planting, apply 4.6 to 7 lbs./1,000 sq. ft.
For topdressing, use 2.3 to 4.6 lbs./1,000 sq. ft.

Pro Tips for Best Results

Check The Forecast

Avoid applying before heavy rainfall so particles don't get washed away.

Mow First

Clear any lawn debris and make it easier for particles to reach the soil.

Clean Up

Sweep or blow product off the driveways/sidewalks back into the lawn.

Water Deep

Your lawn will need at least 0.2 inches of water.

Spreader Settings

We recommend using a broadcast spreader. These spreader settings are a guide. Many variables such as walking speed, terrain, particle size, density, and spreader condition can affect these settings. Be sure to calibrate your spreader before every application.

See All Settings

Frequently Asked Questions

Once product has been applied, watered-in, and the lawn has then completely dried, pets are safe to enter back out onto the lawn.

Yes, it is ideal to apply SmartPhos while seeding.

While it is not usually recommended to apply two fertilizers at once, you may use another fertilizer in conjunction with SmartPhos as along as the other fertilizer you use has very little or zero Phosphorus.

SmartPhos is recommended for seeding projects and mature lawns that are low in Phosphorus. To test your soil, we recommend conducting a soil test.

Reviews

Overall rating: 4.5 / 5 from 4 reviews.

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Review highlights

Reviews

Helped green up the lawn

"Helped green up the lawn very well. I applied with PGF complete based not he results of my soil analysis. Like all products from Andersons, I am very pleased"

— John J. (5/5)

The Proof is in the soil test.

"This is my second application. Recent soil tests indicate my lawn has low phosphorus. I’m anxious to see the readings of my next soil test. I will say that the application rate for my Earth Way broadcast spreader appears to be incorrect. I had to back it off quite a way to cover my 5000 sq. Ft. Lawn."

— Tom S. (3/5)

Great for lawn establishment!

"I used a light application on my new Buffalo Grass lawn. Great product. I used along with ConTec."

— Michael C. (5/5)

Easy to apply. Looking forward

"Easy to apply. Looking forward to seeing the long term results."

— Jonathan S. (5/5)

Q&A

Can I apply PGF complete and Smartphos at the same time?: Yes, these fertilizers can be applied the same day. Apply one, then the other, then water it in. We recommend making sure your lawn needs all NPK nutrients with a soil test before applying. Always follow recommended application rates.