12-12-12 Starter Fertilizer (with 3% Iron)

  • $49.99
  • $46.99

If you need to get a good amount of all the macronutrients and a nice complement of micronutrients for your lawn, this Starter Fertilizer, the "Triple 12" is your go-to for premium elements - formulated specifically for DIYers.

  • Analysis is 12-12-12 :: N-P-K
  • Great for lawns that need a bit of everything
  • One 45 lb bag covers up to 15,000 square feet

Temporarily, this product cannot be shipped to the following states: CA, OR, WA, ID, UT, NV.  Please use Complete 14-7-14 instead.

Most of the nitrogen in this blend is ammonium sulphate, a premium N source that brings a really nice steely-blue-green color to turf and interacts well with the other elements in the overall blend. 

12% phosphorous is plenty to push roots in an existing lawn or stimulate rooting in your seed, sod, plug or sprig project.

Rounding out the macros is 12% potassium. Here we have opted for the premium formulation, sulphate of potash, known to have a lower salt index. 

This product also includes a nice amount of iron at 3% and a smattering of other micronutrients including boron, copper, manganese, molybdenum and zinc.

Bio-Nite Included  

This product is also spiked with Bio-Nite. You have heard of Milorganite for sure and this is the same thing (bio-solids) but instead of being sourced in Milwaukee, Bio-Nite comes from South Florida. It brings the smell of success and feeds soil microbes at the same time.

Not Just Starter Fertilizer

What is 12-12-12 fertilizer good for? You can apply this when you seed or sod. Apply at 3lbs/1,000 sq ft the day you seed or sod and again at the same rate 2 weeks later. 

But it's also great for anyone just looking for "all of the things." If you have a soil test that shows you are low on the big 3 macros, this is an excellent choice.

All Grass Types

This Starter Fertilizer can be used on any and all grass types. Apply in spring to get your lawn moving or in summer for a lower N and higher P and K blend that won't drive too much top growth. Also makes an excellent winterizer.

It is recommended you get a soil test if you plan to use this product often. in Some cases you may not need all the phosphorous. Also, some municipalities have regulations against the use of Phosphorous unless you have a soil test confirming you need it. Others allow phosphorous only when seeding or sodding so be sure to check with your local county extension office for an update on your local rules and regulations. 

Analysis: 12-12-12

Coverage: 45 lb bag covers 15,000 square feet. 

Package Includes: 1 - 45 lb. bag

12-12-12 fertilizer can be used on all grass types, such as the following:

Cool Season Lawns - Kentucky Bluegrass, Turf Type Tall Fescue (all fescues), Ryegrass
Warm Season Lawns - Bermuda, St Augustine, Zoysia, Centipede, Bahia

Label: 12-12-12 Fertilizer PDF Label

Spreader Settings: Granular Fertilizer Spreader Settings

Package Includes: 1 - 45 lb. bag

Coverage: 45 lb bag covers 15,000 square feet. Apply at 3 lbs per 1000 square feet of lawn area.

Water-in Instructions: Apply to a dry lawn and water into turf within 48 hours with 1/4" of irrigation or rainfall.

Sweep excess off sidewalks and driveways to avoid staining.

Storage: Store in dry conditions away from moisture. Can be stored for up to 2 years.

Does 12-12-12 need to be watered in?

  • Yes. Apply 1/4" of water from irrigation or rainfall to move the fertilizer into the soil.

Can I apply Essential-G on the same day as 12-12-12?

  • Yes. We recommend that Essential-G be applied before 12-12-12.

Can I apply liquids and 12-12-12 on the same day?

  • Yes. We recommend applying granular products before liquids. So you would apply 12-12-12 and other granulars, followed by your liquid products. 


Shipping: United States Only.

Currently NOT shipping to:(AK,HI). For AZ,CO,MT,NM,UT just a small shipping charge of $9.95/ea will be applied. 

We can not ship to PO Boxes

Typically delivered in 4 - 7 business days.

Cancellations | Returns | Exchanges: All sales are final, no cancellations, returns, or exchanges