(Updated February, 2020)
In 2018 and 2019, the ever-popular slow-release organic fertilizer Milorganite was in short supply. This has caused many lawn care addicts across America to scramble for some last-minute alternatives. Be sure to find some Milorganite substitutes early this year, just in case.
Lawn Phix has an updated list of organic nitrogen fertilizer alternatives for 2020. Some you’ll be able to find in your big box stores, others can be found online, and more uniquely we have broken out some Milorganite alternatives by State. You may be able to find these at your local nurseries or even Water Resources Authority – like Bay State Organic Fertilizer in Massachusetts.
And be sure Read below why you should choose an organic nitrogen fertilizer.
At the time this post has been updated (February 26, 2020) select Home Depot locations still have the newer 32 lbs. bag of Milorganite for $19.98.
You can also purchase Milorganite on Amazon for $33.50 with free shipping and a pair of Pearsons Protective Gloves.
Milorganite Alternatives on Amazon:
Milorganite Alternatives at Home Depot:
Milorganite Alternative at Mernards
Milorganite Alternatives by State:
(Note: some of these may not be exact clones or biosolid fertilizer replicas, but an alternative nonetheless)
- OrganiCal (California Organic Fertilizers, Inc.) 7-1-2
- Bloomsoild 5-6-0
- Bay State Fertilizer 4-3-0
- Natural Lawn Fertilizer 4-3-0 (Mernards)
- MightyGrow 4-3-4
- OceanGro 5-5-0
- Poconite 5-2-0
- SoundGRO® Fertilizer 5-5-0
- MetroGro 8-4-1
Why Organic Fertilizers?
Milorganite is a popular organic fertilizer for many reasons. First off, it is a slow-release nitrogen fertilizer. This allows you to apply nitrogen fertilizers less frequently, and the slow steady release provides nutrients for up to 10 weeks.
Organic fertilizers like Milorganite are also non-burning. This means it is safer to use during summer months than synthetic fertilizers. The slow-release nitrogen also aids in the non-burning benefits.
These also provide a good source of iron. Iron, of course, is important to provide that deep dark green, picturesque grass that all lawn care addicts yearn for. And unlike liquid iron sulfate products, Milorganite will not stain concrete driveways, patios or walkways.
Lastly, and perhaps most importantly, Milorganite (and some of these alternatives fertilizers) contain a lot of organic matter which helps feed the soil. When the soil is nourished, it feeds and activates soil microbes.
Do you know of any other Milorganite alternatives in your area, or online? If so, please let everyone know by posting a comment below.
Frequently Asked Milorganite Questions
Milorganite is a popular organic fertilizer manufactured by the Milwaukee Metropolitan Sewerage District. It is a slow-release nitrogen that contains iron, and provides beneficial nutrients to your soil. Read Lawn Phix Why Organic Fertilizers section to learn more.
The Nitrogen-Phosphorus-Potassium (N-P-K) analysis is 6-4-0. A full bag rate application, as directed on the 32 pound bag (from their previous 36 pound bags) covers 2,500 square feet and delivers 0.77 pounds of nitrogen per 1,000 square feet.
Depending on where you live and what your lawn care program consists of, but for cool season lawns, you can use Milorganite as frequently as 4-6 times per year. For Massachusetts Zone 6 for example, Lawn Phix suggests five applications between May-September.
Depending on how much Nitrogen you are looking to put down per application and per year, Milorganite is safe to use with other N-P-K fertilizers and supplements. For example, Lawn Phix suggests using Milorganite in conjunction with a starter fertilizer, lime and Kelp4Less when overseeding in the fall. Use our Nitrogen Calculator to help calculate the amount of Nitrogen you’re applying.
Milorganite can be found at some select Home Depot, Lowe’s, and Ace Hardware locations. You can also check your local nurseries, lawn and garden centers, and hardware stores. Milorganite can also be found on Amazon.com and other e-commerce websites. Sometimes Milorganite can be in short supply. You will want to look for some alternatives just in case you can’t find it, or need something cheaper within your budget.