Home Guide How Long Does Milorganite Take to Work on a Lawn

How Long Does Milorganite Take to Work on a Lawn

by gardeningit
How Long Does Milorganite Take To Work On A Lawn

Have you ever walked past your neighbor’s lawn, looked at his fresh green grass, and wondered, “What magic potion does he use for his grass’s lush growth while your garden is all dull and dry?” Well, Milorganite is actually the secret ingredient of that magic potion. The Milwaukee Metropolitan Sewerage District produces this organic fertilizer, which is all-natural, by the way. The process of manufacturing Milorganite includes recycling sewage and turning it into a slow-release fertilizer. The real deal about it is that how long does milorganite take to work on a lawn?

The Potency of Milorganite

The ability of milorganite to work effectively on the lawn’s rich growth depends upon its potency and nutrient content. This all-natural fertilizer, unlike many other chemical fertilizers, has 85% nitrogenous elements. This high nitrogen content is essential for the fast growth of plants. Also, it ensures an increased formation of chlorophyll in the leaves of plants. This elevated number of chlorophyll results in greener and fresher leaves.

Milorganite is an organic fertilizer that is manufactured through sewage sludge treatment. All this is conducted by the Metropolitan Sewerage District. Microbes are used to react with sewage water. These microbes break down the organic components in this wastewater. All this procedure produces sewage sludge as a byproduct.

After this, the next step is to pass this sewage sludge through hot air of temperature 500-650°C. In the end, a bio-solid fertilizer is obtained that has a high content of nitrogen and phosphorus. Both of these nutrients are essential for your lawn’s lush growth.

Its slow-release feature do wonders; it is available for an extended period of time, and you need not feed your lawn now and then. Once applied, you can leave your lawn growing on its own for several weeks.

How Long Does It Take For Milorganite To Work

How long does milorganite take to work on a lawn is the question that arises in the minds of many people. To clear the confusion and answer this question, our team of experts has made sure to provide the smallest details to our readers.

Once you get your hands on this magic fertilizer, you might want your grass to turn all-green and enchanting in just a day. However, it is not possible; every great thing takes some time to happen. The answer to the question, ‘How long does milorganite take to work on a lawn?’ is that it takes just 7 days! Yes, that’s it! 7 days and your grass will become as greener and fresher as your neighbors’.

Grass normally grows at a rate of 2-3 centimeters per week. So, it will take a week or two for the apparent lush growth of your lawn. However, this span may fluctuate depending on different factors and conditions.

The three major factors that affect how long does it takes for milorganite to work are rainfall and temperature.


Applying milorganite to the grass before rain or after heavy rainfall proves beneficial as it increases the effectiveness of the soil, provided that the rain does not wash off milorganite. If applied during the rainy season, milorganite takes 1 week to do its job.

High Temperature

Warmer weather and high temperature breaks this fertilizer down and make it readily available to the grass. At higher temperatures, milorganite takes a week and a half to increase the grass’s growth.


The region where you live in and its climate affects a lot on how long does it take for milorganite to work. For example, if you live in warmer zones in the tropics, your fertilizer will take less time to dissolve and will be readily available to the grass. But if you live in a relatively colder region, your fertilizer will take a little more time to do its magic.

You might wonder why this milorganite is taking so long to work; the answer to this is its slow-releasing feature. It also contains iron, which ensures the vibrant green color of your grass. This iron content also takes more time to be accessible to the grass and is slowly released into the soil.

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How Often Should You Apply Milorganite?

Moving on, the next important thing to keep in mind while feeding your lawn with milorganite is its frequency of application. As milorganite is a slow-release fertilizer, it is accessible and available to grass for an extended period of time. The production guidelines by Milwaukee Metropolitan Sewerage District indicate that feeding your grass four times a year will be sufficient. This means you just have to feed your lawn again after every 10 weeks. This also includes the winter season, when the rate of growth is relatively slow.

How Much Milorganite Should You Apply?

The instructions on the packaging of milorganite give accurate details about the right quantity for its application. 13 lbs. of Milorganite is recommended for every 1000 sq. ft.

However, strictly stick to the instructions because over-application can actually do more harm than good. The high-nitrogen content of milorganite will burn the grass if it is applied in more than sufficient quantity; the grass will start to turn yellow.

On the other hand, applying a lesser dosage will dim the color of grass, and it will fade away. So it is advisable to always follow the available instructions.

Will Your Lawn Smell Of Milorganite?

Milorganite, being an organic fertilizer, has a strong unpleasant smell. But you need not worry about it staying for long. This unpleasant smell will wear off after a week or two. However, if your surroundings are warmer and more humid, this smell could persist for a while.

But do not be all judge-y, not all the products are perfect. Everything comes with a negative feature; just bear this foul smell for a week, and then watch your lawn flourish and grow lush.

The fading away of its smell depends a lot on how long does milorganite take to work on a lawn and how long does it take to get completely dissolve into the soil.

Final Thoughts

Having a lawn in your home is all about greeny-nature and fresher vibes. What’s the point of having a lawn in your home if it is not fresh green and beautiful? Just like every other living thing, your grass also needs to be fed occasionally with necessary nutrients. Organic Milorganite is what your grassy lawn needs for faster and lush growth of its foliage.

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