How Long Does Milorganite Take To Work On A Lawn?

logo by Editorial Staff | Updated on July 11th, 2022

How long does milorganite take to work on a lawn? 1 week is the exact answer.

Have you ever stood on a lawn and wondered the secret behind the beautiful green grass? The cat is finally out of the box. Milorganite is an organic and natural fertilizer.


The Milwaukee Metropolitan Sewerage District prepares it by recycling sewage. It not only improves the health and look of the grass but also astonishingly raises the growth rate.

People often consider the product’s efficacy and rate of efficiency. The answer is yes if you’re wondering if the product is genuinely effective. The question now is, how long does it take milorganite to work on a lawn?

Let’s delve deeper into Milorganote, the excellent organic fertilizer.

Milorganite is a brand of biosolids fertilizer made from sewage sludge. The wastewater is treated with bacteria, which aid in the breakdown of organic materials.

As a result, sewage sludge is created as a byproduct.

Furthermore, the sewage sludge is treated with hot air that ranges from 900 to 1,200 degrees Fahrenheit. Following that, the purified water is discharged into Lake Michigan.

The recycled fertilizer contains phosphate and nitrogen necessary for plant development. As a result, we’ll talk about how long it takes milorganite to work on a lawn.

How long does milorganite take to work on a lawn?

Factors that affect the milorganiteTime is taken before it works
Rainfall1 week
High temperaturesA week and half

The amount of time it takes milorganite to work is affected by several factors. However, after applying milorganite, you should notice improvements in your grass within a week.

Furthermore, a milorganite treatment may last for ten weeks, making it ideal for usage in your grass. This fertilizer guarantees vivid green grasses within a few days after application.

If you want a perfectly green lawn, milorganite is the fertilizer for the job.

Why does mowing the grass take so long?

Milorganite is intended to release nitrogen into the lawn as it develops progressively. As a result, it is ideal for long-term usage.

In addition, the milorganite fertilizer contains iron, which improves the brilliant green color of your grass. The iron is gently released into the soil at a moderate rate.

Factors influencing the release of microorganites

Understanding how milorganite works can help you understand why it takes so long to work on your grass. As previously stated, the fertilizer is formed from dried microorganisms subjected to intense heating and organic debris that has been digested in water.

To keep your grass from becoming overly nitrogen-rich, the fertilizer contains organic nitrogen, making it ideal for usage. In addition, because of its high iron and nitrogen content, it is great for boosting the green color of your grass.

Some of the elements that influence the time required before the milorganite work are as follows:

The quantity of milorganite utilized

The amount of milorganite utilized is quite important. You should apply milorganite at the same rate as you would a lawn; however, it should not be more than double the lawn rate.

Excessive milorganite use is only recommended for properly balanced soil on lawn and tone. It should also be able to handle various types of organic material.


For the best results, add milorganite fertilizer when rainfall is around 14 inches. Then, when you apply it when the water content is correct, your grass will become green in a few days.

How Frequently Should I Use Milorganite?

The next obvious (and fairly typical!) issue is how frequently Milorganite should be applied to your grass.

Normally, once every 10 weeks would be sufficient.

In fact, according to the Milwaukee Metropolitan Sewerage District’s manufacturer standards, an application schedule of four times per calendar year is advised.

This corresponds to the prescribed 10-week schedule, which considers the winter months when lawn grass growth is rare.

Your location is important when it comes to the application timeline. For example, if you live in sunny Florida with nice weather most of the year, the winter months may be of little importance.

In contrast, if you live in upstate New York or Massachusetts and have long winter days, you may want to change your Milorganite application timing accordingly.

How Much Milorganite Should I Use?

In this regard, Milorganite packaging includes instructions on how much to use. We highly advise you to follow the directions provided.

Remember that too much Milorganite, administered frequently, will do more harm than good. Excess nitrogenous fertilizer applications like Milorganite can result in startlingly bright grass.

On the other hand, less-than-desirable consumption may result in a fading green tint in your lawn grass.

As a result, the quantity you apply should be just correct; the instructions included with your product will help you with this.

Can Milorganite Be Used in Combination with Other Fertilizers?

The quick answer is yes. Milorganite, according to the firm, can be used in conjunction with other lawn care products such as supplement fertilizers, herbicides, fungicides, and insecticides. In addition, you don’t have to worry about over-applying Milorganite because it’s mild on your grass.

If you must use it in conjunction with other fertilizers, check the instructions on the fertilizer bags to avoid over-fertilization, which might result in grass burns.

Is Milorganite Dangerous?

“Can you get ill from milorganite?” This is also a popular query from people learning about Milorganite for the first time. However, because it is a byproduct of wastewater treatment, you may be hesitant to use it in the first place.

While it has been subjected to rigorous testing to ensure that it is effective and safe for the environment, we do not advocate using Milorganite without safety equipment, such as gloves. Of course, you wouldn’t want to keep it within reach of youngsters or pets.

Milorganite’s Advantages

It provides nitrogen

Milorganite is a nitrogenous fertilizer that contains 85 percent nitrogen. It gradually delivers the needed amount of this macronutrient over a long period. To comprehend the significance of this fertilizer, it is necessary first to grasp the role of Nitrogen in the grass.

Nitrogen assists in the formation of chlorophyll by plants. This green material is in charge of producing ‘food’ for the plants. As a result, it helps the plant develop to look healthy and improves the foliage.

It’s a Slow-Release

The nutritional needs of the plants are not met in a single day. In reality, they require a steady flow of fertilizer to offer the necessary nutrients progressively. Milorganite’s slow-release characteristic makes it an ideal fertilizer for grass, consistently supplying the required Nitrogen dose.

It’s organic

This is an organic product comprised of over 85 percent organic ingredients. It works with minimum surface pollution, as opposed to a variety of synthetic fertilizers. As a result, it is suitable for residential use and has no discernible toxicity.


Milorganite is a slow-release organic fertilizer that contains 85 percent nitrogen. It benefits the plants by ensuring that excess nitrogen is available. Unlike synthetic fertilizers, it does not pollute the soil or surface water.

Do most people want to know how long it takes milorganite to work? The first-week greens the grass, followed by a noticeable growth rate and foliage increase by the end of the third week.

This was our attempt to educate you on the efficiency and usefulness of this organic fertilizer, Milorganite. We hope you have received your responses to the famous question.

How long does it take milorganite to work on a lawn?

Finally, keep in mind that if you are seeking:

  • Green, healthy grass
  • Fertilizer that is low-maintenance and has to be applied regularly.
  • Avoiding chemical fertilizers that have negative side effects

Then Milorganite is unquestionably a good pick!


Editorial Staff

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