How Much Does Grass Grow In a Day? (The Best Answer)

One of the greatest home status achievements these days is having the most perfect, pristine lawn.

However, growing and maintaining the perfect lawn does come with some struggles, though. Firstly, weeds need to be controlled; this takes time and elbow grease. Then there’s aeration, seeding, fertilization, mowing, watering, etc.

However, once the lawn is at the point where it just needs to be cut, the only issue that can arise is its growth rate. A slow growth rate can allow thicker, more lush grass blades to poke through.

For that matter do you know how much does grass grow in a day, though? Can the rate be improved?

Well, it varies on multiple factors, and that’s why it’s very difficult to answer this question. But, in general we can expect .06 to .20 inches of growth per day. However, there are some grass types which grows much faster than others.

In this article, we’ll go through the factors that can affect the growth rate and more.

How much does grass grow in a day

Can grass grow overnight?

It is debatable whether or not grass can grow at night. To make things clear, if it was pitch black for the whole day, then the grass wouldn’t be able to produce the energy it requires to grow.

Can grass grow overnight

Consequently, as long as the grass receives 4-5 hours of sunlight daily, it can use photosynthesis to grow. That’s not to say that the grass will grow a great deal, although it will still grow somewhat.

It definitely wouldn’t grow more than it would during the daytime. It uses any stored energy to grow instead of being constantly recharged via the sun during the day.

How Much Does Grass Grow in a Day?

The growth that grass can achieve per day depends on various factors. If all of these optimal conditions can be met, it is possible to see an average of .06 to .20 inches of growth per day. Additionally, certain grass types grow faster than others.

These include perennial and annual ryegrasses. Furthermore, if we were to name the fastest growing grass in the world, it would be bamboo.

However, bamboo isn’t something that you would grow as a lawn. On the other end of the spectrum, species such as buffalograss, Nana, or Dwarf Carpet of Stars grow extremely slowly.

They grow so slowly that, quite often, they don’t require any mowing maintenance. The factors that determine the growth rate of any lawn include the type or species of grass, availability of sunlight, soil temperature, overall health, moisture, and nutrients. 

The Factors Which Determine How Fast Grass Grow

We all want our lawns to grow thick and fast. We want them lush and green, so all they need as far as maintenance is concerned is to be run over with the lawn mower.

Why does it seem like some lawns can explode with growth while others seemingly similar can’t even be compared?

That’s probably because a handful of conditions need to be met for a lawn to grow without hindrance. Let’s look at these factors and learn how optimizing them can help achieve the perfect lawn.

The Factors Which Determine How Fast Grass Grow

Type Or Variety

Choosing the right grass type before growing is an important consideration. Different types and species grow at different rates. Furthermore, some species of the same grass types can grow at different rates. Each variety has different characteristics as far as yield and date (timeframe) of heading are concerned.

Additionally, some types won’t even grow in specific seasons. For example, the ​​Zoysia won’t start to green until later during springtime. 


Sunlight is essential to any type of garden growing organism, including grass. They need the sun’s rays to be able to photosynthesize.

This process creates the energy the grass needs to grow. Even as little as 4-5 hours of sun per day can allow the grass to grow, albeit much slower during the night. 

Soil Temperature

Soil temperature is one of, if not the most critical factors, to ensuring grass grows effectively. In the beginning, the seed needs warmth and moisture to initiate germination. Optimal growth can be obtained when the top 10cm of the soil can receive a consistent 41°F (5°C).

At this temperature, the grass can take in more moisture, which will assist with nutrient uptake. More nutrients increase overall growth.

This may take several sunny days worth of warmth to show an increase in growth. Areas, where the sun can reflect or harvest heat may grow faster than others. These spots include concrete or asphalt, where these materials absorb heat.

Also, hillsides and beside sunnier sides of buildings can help generate the extra heat required to increase the growth rate. The best way to check the soil temperature to plan either sowing or measuring growth is by using a probe thermometer. 

Health Of the Grass

If the growing lawn is patchy and/or weedy, the overall growth may slow down. This characteristic is usually due to poor soil that may be too compact or offer no drainage.

It’s best to try to aerate and reseed. If this has no effect, it may be worth pulling the whole lawn up. Follow that up by churning the soil while adding better-quality organic material to help correct the issue. 


Watering is a bit of a balancing act. In the beginning, watering is essential to help germinate seeds. It’s important to help the seeds begin their rooting process.

However, once the lawn is established, too much water can slow the grasses growth rate down by hindering the root activity.

Additionally, compact soil won’t allow adequate drainage, so the water frequency will need to be adjusted. The lawn may have been set up correctly, but unfortunately, high traffic areas can slowly pack the soil to the point where the moisture will just sit on the surface.

As a result, the moisture won’t get to the roots. This, in turn, affects overall growth.


Nutrients or plant food in the form of fertilizer affect the time it takes for the grass to green up. The greener, the healthier they are, and the faster they grow. When fertilizer is administered just before spring, grass will tend to green up a little faster than without the added nutrients.

The Factors Which Determine How Fast Grass Grow

Additionally, the nitrogen in the plant food dictates the amount of yield. The faster blades grow, the more light they can take in. More light means more overall growth.

Phosphate helps establish and strengthen the roots and stems. Potassium controls the actual processes of growth. E.g., taking in more nutrients, utilizing and distributing water, etc. 

What part of the day does grass grow the most?

The time of the day that grass grows the most is the middle of the day. We can almost see grass as a battery operated mostly by the sun. As the sun shines or is even present, the battery charges up and grows with its stored energy.

This means that as it soaks up the sun’s energy during the day, it can still grow during the night hours. It may not grow as fast during this time, though. Then in the morning again, it would have most likely run out of energy, so it will begin to charge again.

There won’t be enough stored energy to grow fast during the morning, but by midday, the stocks will be full, and growth can proceed at full speed again. 

How Fast Does Grass Grow in the Summer Season?

A small handful of factors will determine the speed of growth during the summer season. Again, the type of grass, soil composition, drainage, and all that jazz will be the maker or breaker of the growth rate.

The biggest contributing factor comes from the temperature, though.

How Fast Does Grass Grow in the Summer Season

An average temperature is often seen as a sweet spot amongst lawn enthusiasts. This temperature is around the 75°F (24°C) mark. So once the summer season starts to get into full swing, and the temperature consistently hovers around that heat, the grass will noticeably grow faster.

As long as the lawn is fed properly and given an adequate amount of moisture, there is no reason why it couldn’t grow at a rate of ⅕ inch per day.

The temperature of the soil impacts the rate of the nutrients being taken in by the grass. Optimal soil temperatures also help activate the root system. The roots soak in water, oxygen, and nutrients to help the grass grow more efficiently.

Hence faster growth in the summer season.

How Fast Does Grass Grow in Winter?

Grass will grow a lot slower during late fall and through winter. Depending on the location, the colder temperatures make the grass or soil dormant, and very little growth will occur.

Furthermore, if the grass grows in a location that gets layered with snow during the winter, it will freeze and not grow at all.

How Fast Does Grass Grow in Winter

Some species, such as Kentucky Bluegrass, are known to grow well during the winter, fall, and spring. However, germination time is a lot slower due to the lower soil temperatures.

They will generally sprout from seed in around 14-28 compared with many of your average grass species that can sprout in as little as 10-14 days.

Of course, growing grass in the colder months requires all conditions to be adequate to support the growth. 

How much does grass grow in 1 week?

Assuming that all growing conditions are optimal for the grass to grow freely, it can usually grow around 2-3 cm per week.

The most important factor is soil temperature.

This will stem from the time of year and the associated weather conditions. The grass species will also play a big role in the speed of growth per week. 

Table of Grass Growth Rate according to the type of the grass and Temperature

To visualize comparisons between the types of grasses and their growth rate according to certain temperatures, we have created a simple to understand table. The seasons assume that the temperatures are optimal for those types of grasses. 

Grass TypeSeason/TemperatureGrowth Rate
Tall FescueYear RoundFast
Dwarf Tall FescueYear RoundModerate
Double Dwarf FescueYear RoundSlow
Hybrid BermudaWarm SeasonFast
St. AugustineWarm SeasonModerate
Kentucky BluegrassCool SeasonModerate
Perennial RyegrassCool SeasonFast
Zoysia GrassWarm SeasonModerate
Seashore PaspalumWarm SeasonFast
Creeping Red FescueCool Season Slow

Frequently Asked Questions (FAQs)

How fast does lawn grass grow?

No universal time frame says how fast or slow a lawn can grow. Additionally, several factors can determine the growth rate for any grass area. These include grass variety, sunlight, season, soil temperature, available moisture, and nutrients. If all conditions are optimized, an average grass species may grow 2-3 cm per week.

Does sunlight grow grass faster?

Sunlight is the key component of photosynthesis. Photosynthesis is the process a growing organism, such as grass, uses to convert the sun’s energy into its food source to enable it to grow. So, sunlight makes grass grow faster. A lack of sunlight, on the other hand, will slow down and even halt growth altogether. 

How fast does grass grow after mowing?

Depending on the height the grass has been cut, mowing the lawn can allow it to grow back faster. When the lawn is mowed, the grass will use all its energy to regrow to its optimal height. If the grass is cut too low, it will take more energy and time and can also affect the roots. If the grass is cut higher, the blades will be much more thick and lush. The grass will focus its energy on regenerating just the tops, which will occur much faster. 


So as we have discovered, there is no universal timeframe for the speed of lawn growth. Factors such as grass variety, soil temperature, available moisture and nutrients, sunlight, and seasons affect the daily growth rate.

Get all of these conditions right, though, and your grass will reward you with thicker, lusher blades that everyone can envy! We hope that this article has been helpful. Happy growing!

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