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4 Common Questions About Fertilizing Grass in Spring

6 min read

You’ve probably heard us talk about how important fertilizer is for your lawn. It provides essential nutrients that your lawn needs to perform its best. When you fail to fertilize your lawn, it has to rely on what’s already in the soil. Since suburban residential soil is typically quite depleted, the end result is a thin and discolored lawn.

Even if you’ve heard us talk about lawn fertilization before, we know that you might have some questions about fertilizing grass in the spring. 

We’re here to help answer all of your common spring lawn fertilization questions. We want you to feel confident as you begin to fertilize grass in the spring and beyond.

We’ll cover:

1. When to start fertilizing grass in spring
2. How to fertilize grass in spring
3. What type of fertilizer to use
4. When to mow after fertilizing grass in spring

After reading this article, you should be ready to go with spring lawn fertilization.

1. When to start fertilizing grass in spring?

At Oasis Turf & Tree, we include fertilization in our first round of applications.

The early spring application is really important to start your lawn off on the right foot. This first round application consists of a wake-up fertilizer for the lawn as well as a crabgrass pre-emergent. 

lawn care expert fertilizes grass

This fertilizer will help your lawn to green-up as it starts growing again.

As far as exact start times, this will vary a bit from year-to-year as it’s based on soil temperatures. Rest assured that your lawn care professional is keeping a watchful eye on soil temps to determine when to start spring lawn care.

2. How to fertilize grass in spring?

Understanding how to apply fertilizer is a huge mystery to some. We often hear homeowners tell us that they don’t really understand the fertilizer numbers that they see on a bag. This can lead to some common myths, such as assuming the higher the numbers on the bag, the better the quality (which is not how it works).

The three numbers on a bag of fertilizer (N, P, and K), represent the three macronutrients that are used by grass plants. These are Nitrogen (N), Phosphorus (P), and Potassium (K).


The ratio (written as N-P-K) represents the percentage of each nutrient. But what really matters is the application rate. This is a pretty complex issue that a lawn care company needs to calculate.

Throughout the year, Oasis Turf & Tree is paying close attention to the recommendation for the optimal amount of nutrients that should be applied to the lawn. At different times of the year, that will change.

It’s important that whomever is applying fertilizer to your lawn is not doing so haphazardly but rather in a calculated and strategic way.

3. What type of fertilizer to use?

It’s a common misconception that all fertilizer is the same. The stuff that you’re picking up at the hardware store is not going to be as high-quality as a professional-grade fertilizer that a conscientious lawn care company is investing in.

At Oasis Turf & Tree, we take lawn fertilization and other lawn care products quite seriously. In addition to a high-quality fertilizer, we also use biostimulants in our lawn care program. 

lawn care technician pours fertilizer into spreader

This is because we know that the secret to the best lawns lies in healthy soil.

Lawn biostimulants work with lawn fertilizer to help make it even more effective. This lawn biology also helps roots to better absorb these vital plant nutrients. 

While a lot of people fertilize their lawns, we’re building even healthier soil with the use of both fertilizer AND biostimulants.

4. When to mow after fertilizing grass in spring?

We know a lot of people worry that mowing will impact fertilization. But the truth is, it’s not going to have any significant impact. 

It’s a myth that fertilizer products get “sucked up” by a mower and it’s not going to move around enough to really change the distribution of the product.

homeowner and lawn care expert inspect grass

However, a reason why you should wait around 24 hours to mow after an application is because of the weed control products applied. You do want to give the weed control product some time to work before mowing.

Getting the Best for Your Lawn with a Professional Lawn Care Guide

Hopefully this answered some of your questions about spring fertilization. Fertilizing grass in the spring is just one step that you should be taking to get your lawn off to a healthy start. 

There’s also weed control as well as keeping a watchful eye out for pests and diseases. As your lawn starts growing again, this is a critical time to make sure it’s getting everything it needs.

We understand you probably have better things to do than worry about what your lawn needs to perform its best. Lawn care can be complicated and you probably don’t want to have to figure it all out.

In the end, instead of having to worry about any of this, you can hire a professional to take away your worries. When you take advantage of professional lawn care services, you can feel confident that your lawn is getting everything it needs no matter what the season.

Choosing Lawn Care in Cincinnati, Dayton, OH and Northern Kentucky

When it comes to getting the most out of lawn care services, you’ll want to be sure that you partner with the right professional.

That means choosing a lawn care pro that truly has your best interest at heart. Your lawn should be receiving high-quality fertilization plus biostimulants in order to grow the healthiest it can. But some lawn care companies fail to invest in top-notch products as they want to make more money off their services.

By choosing Oasis Turf & Tree to care for your lawn, you can know that you are making a wise investment in ensuring your lawn has everything it needs to thrive. That means truly letting go of your worries and gaining peace of mind that your lawn is in good hands.

Want to learn more about professional lawn care services for your Cincinnati, Dayton, Ohio, or Northern Kentucky home? Request your quote, choose the lawn care program that’s right for you, and then sit back and relax as the pros help you get the lawn of your dreams!

Check Out Our Lawn Care Programs & Costs!

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