Is It Too Late To Seed My Lawn In September

Is It Too Late To Seed My Lawn In September?

No, it is not too late to seed your lawn in September. Seeding your lawn in early fall/September is the best time to seed a lawn with cool-season grasses. If you use warm-season grasses, then you must wait for April for the seeding.

When you first purchase your home, one of the most significant restorations you can do to the property is put in a lawn if the house does not have one or remove the already existing lawn and plant a fresh new crop of grass. Many homeowners, especially people who own their home for the first time, want to put in a new lawn. 

What to do when seeding a lawn

Homeowners want to do this because they want to put in a different grass species to create a more vibrant lawn, or they want the type of grass that doesn’t require much water and is drought resistant. After choosing what kind of grass they want for their lawn, the next decision the homeowner has to make is when they want to plant the grass seeds. Certain times of the year are best to seed some grasses and other times are worse.  

This guide will teach you the different times of the year when it is best to plant your lawn. There are three initial factors to consider when seeding your lawn: 

  • the type of grass
  • where you live
  • the date of the first frost of winter.
  •  the month where your area experiences heat waves 

When to plant different types of grass

When it comes to seeding lawns of residential homes, there are two types of grass: cool-season grass and warm-season grass. Cool-season grasses are species of grass that grow during the fall and winter. This type of grass needs planting during the fall before the end of September. Choosing the right time is the best way to ensure an undamaged and beautiful lawn in the spring. Cool-season grass needs the temperature of the soil to remain 55F to 75F degrees to germinate.

If a homeowner wants to use a warm-season species of grass, then they must see their lawn from the very beginning of  April to the end of June, depending on the location. Warm-season grasses are named because they need a constant soil temperature of 70 to 80 degrees to sprout and grow. 

Warm weather Grass can stand a bit of heat and sun, but do not plant them during the most intense part of the summer or the month known for heatwaves. The sprouts will immediately die once exposed to the intensity of the full summer heat, and all your effort you put into seeding your lawn will be for nothing.

Best times of the year to seed your lawn

If you need to know when is the best time to seed your lawn, you should know that it depends significantly on the area where you live. If your home resides in the North or an area with distinct and separate seasons, and you want to plant cool-weather grass, seed your lawn from the beginning of August to the middle of September. Do not wait until the end of September. 

There must be at least six weeks between the initial seeding and the first frost of winter. If you don’t know the date of the first frost, the date is available online. Just google “first frost” and the city or area code where you live.

If you seed your lawn too close to the date of the first frost, the seeds will not have enough time to germinate in the ground, and the temperature will be too cold for them to do so, and any new roots or sprouts will die.

If you live in the South or a warmer area, and you want to plant warm-weather grass, the plan to sew your lawn from the end of March or April to the end of June

Note: If you reside in a place that does not experience low temperatures or snow during the winter, then you may be able to plant cool weather grass at any time during the winter, including December, January, February.

These weather factors are especially true if you live close to the equator. If you live anywhere in the South or the Western United States, Mexico or Guatemala, the date of the first frost should not matter if your area has won at all.

Worst times of the year to seed your lawn

The worst times of the year to seed your lawn are the most extreme times of the year, which mean the summertime and the wintertime. If you try to plant warm-weather dresses during the height of summer, the sun’s heat is too strong.

It will kill any new seedlings were sprout.

As stated above, If you plant cool weather plants too close to the date of the first frost, they will not form correctly or in time. This goes double for the middle of wintertime, which is December or January if you reside in an area that receives snow or drops below 35F degrees regularly. 


If you are planting cool weather grass, September is the best time to seed your lawn. Cold weather grasses can germinate and sprout when the soil is cold, so planting this type of grass in September is preferred, even if the area where you live gets a lot of snow.

But if you have warm-weather grass, you must wait until early spring to early summer if you want to see your The Sprouts that come up with the ground cannot stand cold weather, and they will wither and die.

But if you reside where the temperature does not drop below 50F, it may be possible for you to plant cold weather Grass whenever you want, as long as it is not summertime. 

If you are still unsure of when to plant your special grass species, ask the gardener or visit a small plant nursery to ask their opinion. Bull small plant nurseries and big-box hardware stores can help you understand the best time to seed your lawn, whether it is September or not.