How to Apply Milorganite® Fertilizer to Your Lawn

By Allyn Hane - "The Lawn Care Nut"
May 22, 2021

This month I decided to make a video showing you an easy way to apply Milorganite to your lawn. One of my favorite days to throw down is Memorial Day which is coming up this weekend.

One thing I know though is that there are those of you out there who have a fear of applying and it stops you from taking action. I hope that with today’s video, and this corresponding blog post, you will get up the courage you need to make that first application. Once you do, you will find that the learning curve is easy to overcome and you’ll feel like a pro in no time.

With that, check out this video showing you how to apply Milorganite using a “2 pass” method.

So you will see that with my particular Scotts spreader I calculated the proper setting to be right around 6. Keep in mind, these are no expensive pieces of equipment so they can vary from unit to unit but still, 6 should be a good neighborhood to start in with that spreader model.

Also keep in mind, that setting allows you to get the fertilizer down using a 2-pass method. With this method you apply half of the application going “north and south” and the second half of the bag heading “east and west.” This gives you the opportunity to adjust the setting between your applications to literally “dial it in.” Apply in two passes also gives you a little wiggle room if some of your overlaps are not perfect - you likely won’t stripe the lawn.

For The More Advanced

In this application video, I used the “bag rate” which states that the 32 lb bags covers up to 2,500 sq ft. If I am spreading that across a 2,500 sq ft lawn areas, that equates to 12.9 lbs of Milorganite per 1,000 sq ft.

32 lb bag

Covers 2,500 sq ft

32/2.5 = 12.9

This means I am applying 12.9 lbs of Milorganite across each 1,000 sq ft of lawn area. I’m mostly concerned with nitrogen this time of year and applying at 12.9 lbs/1,000 is going to give me .78 lbs of Nitrogen per 1,000 sq ft of lawn.

I know this because the analysis of Milorganite is 6-4-0. That means 6% of the nutrients in that 32lb bag are going to deliver me nitrogen.

I am applying 12.9 lbs of Milorganite per 1,000 so the math then is:

12.9 x .06 = .774

I rounded that to .79 which is just over ¾ lbs of nitrogen for each 1,000 sq ft of lawn space. That is a perfect amount leading into the later spring and early summer.

With this application rate, you should see visual results in the lawn within 7-14 days as long as you are keeping the turf irrigated and it’s actively growing. The good news with Milorganite is its slow release so it won’t hammer the lawn too hard even as temperatures are going up.

Throw’er down, and hope for the best!

Spreader Settings: Guidelines
General Guidelines Application
Established Lawn 2,500 sq ft per 32 lb bag
New Lawn 1,250 sq ft per 32 lb bag
Weight Conversion 3 cups Milorganite = 1 pound
Spreader Settings: Drop Spreaders
Drop Spreader Established Lawn New Lawn
Ames/Earthway 21 21
Lawn Crafter (Quaker) 8 13
Red Devil 11 12
Republic EZ Grow 8 11
Scotts Accu Green series (1000,2000,3000) 10 16

Tip: When using a drop spreader overlap the wheel tracks.

Note: Spreader settings are to be used as a guide and will vary according to the rate you walk and the mechanical condition of the spreader. For best results, calibrate your spreader.

Spreader Settings: Rotary Spreaders
Rotary Spreader Established Lawn New Lawn
ACE Green Turf Delux 19 19 (2 passes)
Agway 19 19 (2 passes)
Earthway EV-N-Spred (most models) 19 19 (2 passes)
Fertilome 19 19 (2 passes)
Green Thumb 19 19 (2 passes)
Lawn Crafter (Quaker) 5 5 (2 passes)
Precision 9 9 (2 passes)
Red Devil 17 17 (2 passes)
Republic EZ 14 14 (2 passes)
Republic EZ Grow 11 ( 2 passes) 11 (4 passes)
Scotts Basic, Delux Edge Control & Speedy Green series 11.5 11.5 (2 passes)
Scotts Easy Green 29 29 (2 passes)
Scotts EdgeGuard (Pro, Mini), Lawn Pro & Standard 11.5 11.5 (2 passes)
Southern States 19 19 (2 passes)