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When Should I Fertilize My Lawn in Kansas City?

mom and daughter playing in healthy green lawn

The best time to fertilize your lawn in Kansas City depends on the type of grass you have. If you have cool-season grass like Kentucky bluegrass, fescue, or rye, you should fertilize in the fall and spring. In the fall, fertilize your lawn around September or October. This will help your grass store energy and nutrients to survive the winter. In the spring, fertilize around April or May when the grass begins to grow again.

Warm-season grass like Bermuda, zoysia, or St. Augustine should be fertilized in the summer, around June or July. This is when warm-season grass is actively growing and can benefit the most from fertilizer.

When Should I Not Fertilize My Lawn?

It's important to avoid fertilizing your lawn during periods of drought, as this can put stress on your grass. Also, avoid fertilizing when the temperature is over 90 degrees, as this can cause the fertilizer to burn your lawn. In general, avoid fertilizing during the hottest part of the summer.

Do I Need to Fertilize My Lawn Every Year?

Yes, you should fertilize your lawn every year, or every six to eight weeks if you want it to look its best. Regular fertilization will help your grass grow stronger and be more resistant to pests and diseases. However, if you have an established lawn that's in good condition, you may only need to fertilize once or twice a year to avoid overfertilization.

What is Overfertilization?

Overfertilization refers to the application of excessive amounts of fertilizer to plants, crops, or grass. This can occur either intentionally or unintentionally, but the result is the same: an excess of nutrients in the soil that can have negative impacts on the growth and health of the plants.

Excessive amounts of fertilizer can lead to high levels of salt in the soil, which can cause water stress in the plants, leading to wilting and yellowing of leaves. In some cases, overfertilization can also lead to a decline in the overall health and make it more susceptible to disease and pests.

Overfertilization can also have negative environmental impacts, as excess nutrients can leach into groundwater or run off into nearby bodies of water, leading to eutrophication and other forms of water pollution.

To avoid overfertilization, it's important to follow proper fertilization guidelines and use appropriate amounts of fertilizer based on the type of plant, soil conditions, and other factors. Regular soil testing can also help you monitor nutrient levels in your soil and make informed decisions about fertilizer application.

How Do I know if My Grass Needs Fertilizer?

There are a few signs that your grass may need fertilizer. If your lawn looks yellow or patchy, has a thin growth, or if you see bare spots, it may be time to fertilize. A soil test can also tell you if your lawn is deficient in any nutrients and if fertilizer is needed. 

How to do A Soil Test to Determine if Your Lawn Needs Fertilizer

Soil testing is an important step in determining the needs of your lawn. Here is a step-by-step guide on how to do a soil test:

  1. Prepare the soil sample: Collect soil from different areas of your lawn using a trowel or soil probe. Mix the soil samples together in a clean container to create a composite sample. The sample should consist of about a pint of soil.
  2. Send the sample for testing or test it at home: Contact your local cooperative extension office or a soil testing laboratory for information on submitting a soil sample for analysis. They will provide you with a soil test kit and instructions for collecting and submitting the sample. Some soil test labs will even provide you with the results online. The other option is you can buy an at-home soil testing kit from your local hardware store and test the sample at home.
  3. Analyze the results: Once you receive the results of your soil test, pay attention to the levels of nitrogen, phosphorus, and potassium (NPK), as well as the pH level. Based on the results, the soil testing lab will provide recommendations on the type and amount of fertilizer to apply to your lawn.
  4. Apply fertilizer: Based on the results of the soil test, apply the recommended fertilizer to your lawn. Make sure to follow the instructions on the fertilizer label carefully, including how much to apply and how often to reapply.

By following these steps, you will be able to determine if your lawn needs fertilizer and, if so, what type of fertilizer to use. This will help you keep your lawn healthy and looking its best.

Is it Better to Fertilize in The Morning or Evening?

Fertilizing in the morning is ideal because the grass has time to absorb the nutrients before the heat of the day. If you fertilize in the evening, the grass will stay wet overnight, which can lead to fungal growth and other problems.

What to Do After Fertilization

After fertilizing, you should water your lawn thoroughly to help the fertilizer soak into the soil. This will also help prevent the fertilizer from evaporating or being blown away by the wind. If it rains shortly after fertilizing, you don't need to water your lawn again.

Should I Mow My Lawn Before or After Fertilization?

It's best to mow your lawn before fertilizing so the grass can absorb the nutrients more easily. After fertilizing, wait at least 24 hours before mowing your lawn to give the grass time to absorb the fertilizer.

Should I Water My Lawn After Fertilizing?

Yes, you should water your lawn after fertilizing to help the fertilizer soak into the soil and reach the roots of the grass. This will also help prevent the fertilizer from evaporating or being blown away by the wind. Be sure to water your lawn thoroughly after fertilization.

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