Kentucky Bluegrass Fertilizer Schedule | For grow Well

Kentucky Bluegrass Fertilizer Schedule

Last Updated on May 8, 2022

Are you looking for the perfect Kentucky bluegrass fertilizer schedule? Then read this content to get complete knowledge about it. This content will surely assist you appropriately.

Kentucky bluegrass is a very desired lawn grass. It is mainly a winter season grass. By providing proper care and fertilizer, it gives a dense, green, and reliable lawn. 

The fertilizer provides necessary nutrients to grow healthy and green grass. If you maintain a proper fertilizer schedule, then Kentucky bluegrass will grow well.

Kentucky Bluegrass Fertilizer Schedule

Kentucky bluegrass is a winter season grass for the yard. It is recognized for its splendid texture and the color dark green. But the color won’t last long if you don’t fertilize your lawn. 

Fertilizer provides nitrogen, phosphorus, and potassium to the land to grow healthy grass. You should know the procedure to use the fertilizer. So maintain a Kentucky fertilizer schedule for your bluegrass lawn which is given below.


Fertilizer works as food for the grass. It gives all the nutrients that grass needs. A fertilizer bag is full of nitrogen, phosphorus, and potassium. But nitrogen is the most important element to maintain the grass’s color and growth.

It contains a 3-1-2 ratio fertilizer in a bag. That means there is 3% nitrogen, 1% phosphorus, and 2% potassium. 12-4-8 fertilizer is the best fertilizer for bluegrass. 

On the other hand, high-quality fertilizer containing the least nitrogen and phosphorus is the best starter fertilizer for Kentucky bluegrassYou can apply the best liquid fertilizer for Kentucky bluegrass as well.

Kentucky bluegrass

Apply Months:

March or April

You should fertilize your lawn in 3-4 phases. Fall is the best time to fertilize your lawn for the first time. In the calendar, it’s in March or in April. In this period grass started to green up. 

October or November 

You can fertilize your lawn systematically in October or in November for the 2nd time or 3rd. Fertilization at this time will stimulate your Kentucky bluegrass lawn again in the spring season.

Processing to Apply 

To start the fertilization first, you must go through a soil test. A soil test will give you a perfect report of the lacking elements of your lawn and recommend the fertilizer you need.

Pick a slow-release fertilizer that contains a 3-1-2 ratio of nitrogen, phosphorus, and potassium. 

For cool-season lawn, apply fertilizer gently in spring and heavily in fall. Apply fertilizer every 6 to 8 weeks during the thriving season. Don’t use too much fertilizer, or else extra nitrogen can damage all the grasses. 

You can use a spreader to apply fertilizer to your lawn. But late February or early March is the perfect time to use fertilizer. In late winter, soil enables deep root outgrowth. The fertilization process continues throughout the year like this.


You should water your lawn properly before a few days of applying fertilizer. You shouldn’t apply fertilizer until the leaves get dry. 

After applying fertilizer, a small amount of watering is beneficial. It helps the soil to absorb the fertilizer. Overwatering can ruin the lawn. So try to use ¼ of water after applying fertilizer.


Mowing is also an important part of keeping the lawn beautiful. Keep the mower blade height between 2.5-3 inches from the lawn in spring & fall. Then again, put the blade height between 3-3.5 inches in summer. Remember one thing, never cut the grass more than ⅓ of the full leaf.


Usually, September is the perfect time to kill weeds for the Kentucky bluegrass lawn. But don’t use any pre-emergence weed killer if you are scheduling to seed or reseed in the fall. It can harm your Kentucky bluegrass seed from thriving.

Frequently Asked Questions

Which fertilizer is best for Kentucky bluegrass?

Slow-release fertilizer is best for Kentucky bluegrass. The ratio of this fertilizer should be 3-1-2. It is essential to utilize a slow-release fertilizer in Kentucky bluegrass.

What time is best to fertilize my lawn in Kentucky? 

Autumn is the best time to fertilize your lawn in Kentucky, as it is a cool-season lawn. These grasses optimally grow in cold weather.

What time should I put starter fertilizer on bluegrass seed?

September 1-15 is the time when you can put starter fertilizer on bluegrass seed. Because during this time at the end of summer & fall, bluegrass perceives the most growth.

Final Notes

Overall, Kentucky bluegrass is an incredible grass that makes the lawn more beautiful with its dark green color. By maintaining the schedule, anyone can keep the loveliness of the lawn easily. 

Fertilization is a must to keep it attractive. So maintain the Kentucky bluegrass fertilizer schedule and keep your lawn beautiful throughout the year. 

It’s not that tough to maintain the schedule. Just use the fertilizer timely and mow your lawn and kill weeds will make the lawn perfect with Kentucky bluegrass.

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Jonathan L. Leon
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