How Long Does Milorganite Take to Work on a Lawn

Milorganite is a natural fertilizer that is made of composted biosolids processed by the Milwaukee Metropolitan Sewerage District. It’s been used in Milwaukee for over ninety years to fertilize grass and plants.

The Milorganite process starts with wastewater treatment, where solids are removed from the water. Next, microorganisms are added to this water, breaking down solids into nutrients like nitrogen, phosphorous, and potassium.

These nutrients stimulate plant growth while suppressing weed growth- making it easier for lawns to grow green and thick without much effort! This blog post will go through how long does Milorganite take to work on a lawn before it can be seen on as well as other benefits it provides such as improving soil quality and reducing runoff into waterways. Read this full blog post so that you can have a clear idea.

How Long Does Milorganite Take to Work on a Lawn

8 Benefits of Using Milorganite:

1. Speed Up Your Results

Milorganite works quickly on the lawn since it begins to break down and release nutrients within hours. However, depending on weather conditions and your soil type, Milorganite can take anywhere from a week or two to several months before the grass absorbs it.

2. Greater Stability

Milorganite is a slow-release fertilizer that feeds your lawn for months instead of weeks or days like other products. Providing your grass with continuous doses of nutrients promotes healthy soil microbes and builds organic matter in your soil. Over time, you can develop a thick layer of protective topsoil on your property, making it more resistant to drought and weeds.

3. Builds Strong Roots, Promotes Lush Growth

Grass-fed by Milorganite grows stronger roots and is less likely to require supplemental watering throughout the summer months. With its healthy root system and rich soil, grass will grow lush and green all season long.

4. Decrease Water Consumption Up To 50%

With Milorganite, you’ll use up to 50% less water because the grass is more resistant to drought, and it won’t need as much water since it thrives in moist soil conditions.

5. Reduced Lawn Maintenance

Milorganite makes your lawn healthier so that you need to mow less often. This means you’ll be able to spend more time doing the things that matter most, like playing with your kids or enjoying some outdoor fun on those long summer days.

6. No More Burning of Lawns

With increased organic matter and nutrients, Milorganite prevents lawn burn even during droughts or hot weather.

7. Stop Weeds Dead In Their Tracks

With its increased absorption and improved root system, Milorganite makes it harder for weeds to establish themselves because your grass is healthier and more drought-resistant than other lawns in the neighborhood.

8. Greater Adherence To Environmental Regulations

Milorganite is 100% organic and it’s classified as a fertilizer, so there is no danger of falling out of compliance with environmental regulations.

How Long Does Milorganite Take to Work on a Lawn?

Milorganite Take some time to Work on a Lawn

When we’re talking about how long does Milorganite takes to work on a lawn there are certain factors that we need to consider. It can take anywhere from a week or two to several months before Milorganite sinks into the soil and starts working its magic on your lawn. Here are some things to keep in mind when you’re waiting for that first satisfying mow of the season.

1. Milorganite Is Food for Your Lawn, Not a Quick Fix

Milorganite feeds beneficial nitrogen-locking bacteria in the soil. Unfortunately, it takes time to build up those populations, which is why it can take several months before you’ll notice results from using Milorganite.

However, if you fertilize with Milorganite as soon as the snow melts and feed again three to four weeks later, the bacteria will be better prepared to fix nitrogen from the air and provide your lawn after its first mowing.

2. A Little Rain or Irrigation Can Wash Milorganite Away

Keep an eye on the weather forecast before applying Milorganite during periods of high rainfall or irrigating. If you know a storm is on the way, delay fertilizing until conditions are more suitable for the application.

3. The Warmer the Soil, the Faster Milorganite Works

Milorganite doesn’t work as quickly when temperatures are cold or soils are compacted. If you’re using Milorganite on new sod that has been laid during cooler weather, keep in mind that your lawn will need to go longer without its first mow than if you planted sod in the fall when temperatures are warmer.

4. Give Milorganite Time to Do Its Thing

Soil food web scientists say it can take up to six months for beneficial bacteria and fungi populations to establish themselves after fertilizing with Milorganite. So, while you may notice improvements in your lawn’s color and density after just a few weeks, it will take longer for Milorganite to build up the populations of bacteria needed to start fixing nitrogen on their own.

5. Pre-soaking or Side Dressing With Milorganite Can Speed Up the Process

If you don’t want to wait, pre-soak the soil before fertilizing with Milorganite. After lightly watering your lawn, spread Milorganite on top of the grass while it’s still wet and water again to wash the fertilizer down into the root zone. Side-dressing is another way to ensure that fresh nutrients are available for lawns without much topsoil.

When to Apply Milogranite to Your Lawn?

When to Apply Milogranite to Your Lawn

In about two to four days after you apply Milorganite, your lawn will start to notice those pellets. If it’s a new lawn that never had a fertilizer treatment before, then it will take a little longer for the product to break down and become available for use by the soil microbes. So in about one week, your lawn should be noticing the fertilizer.

Milorganite will work to green up your lawn, but it won’t show results overnight. It’s a slow-release nitrogen product, so you need to give it 4-6 weeks before actual results are noticeable by most people. If you notice some greening after 2 or 3 weeks, that is normal and expected.  


The most important thing you can do to ensure your lawn gets the nutrients it needs is to apply Milorganite regularly. If you want more information about how long does Milorganite take to work on a lawn or if there are any additional questions that come up in regards to this blog post, please contact us.

We will be happy to answer any questions you have about what this product can do or how long it typically takes before a noticeable difference is seen in the appearance and health of your lawn.

We will be happy to hear your thoughts

Leave a reply

DIY Quickly