How Long Does Hydroseed Take to Grow?

  • Hydroseeding is an agricultural technique with a long tradition. It originated in the United States in the forties of the 20th century. Currently, this kind of grass seed is the most efficient method for seeding lawns.
  • To grow a hydroseeded lawn is neither costly nor complicated. How long does it take for grass to grow after hydroseed?
  • Let’s take a look at the most common concerns people have about hydroseed and lawn.

What is hydroseeding?

Hydroseeding combines seed and water and is straying it onto various types of surfaces, from yard to roadside. This technique leads to the fast and healthy growth of the lawn.

Precisely, there are a couple of crucial elements in the hydroseed mixture: 

  • seed, 
  • mulch fertilizer, 
  • grass seed fertilizer, 
  • soil amendments, and 
  • water;

The resulting blend is called a “slurry.” First, mixing elements take place in a Hydroseeder tank (truck-mounted or trailer-mounted). Then, when it’s ready to use, we spread and spray it at high pressure over prepared ground and wait for the lawn to appear. As a result, the hydroseeded lawn should begin to grow very soon.

The slurry often has also a few other ingredients, like:

  • tackifying agents, 
  • green dye;

Hydroseeding is also known as: 

  • hydraulic mulch seeding, 
  • hydraseeding,
  • hydro-mulching; 

Hydroseeding is an alternative to the traditional process of broadcasting or sowing dry seed. In the paragraphs below, we will tackle a few facts about grass seed. But, first, how long does it take for hydroseed to grow?

What are the main advantages of hydroseeding?

As with everything that a man came up with, the hydroseeding method has its pros and cons. So first, let’s take a look at a few advantages of seeding new grass with hydroseeding. Later, we will tackle the question of the time needed for green grass to grow.

1. Stability

One of the most significant powers of hydroseeding lies in the stability that water gives to seeds. Thanks to this process, the seeds stay in the soil and aren’t blown away by the wind. 

2. Beneficial water 

Water helps new seeds to fertilize. As obvious as that, but think about it. Water in hydroseeding not only helps us to spread large quantities of seed, but it’s also a biological necessity for seeds to grow. 

3. Cost-effectiveness

Hydroseeding is cost-effective. It lets you establish the growing results desired while saving on: 

  • time consumption, 
  • material costs,
  • installation demands of sodding or traditional hand planting methods;

Hydroseeding costs about 50-80% less than the price of sod. Therefore, acquiring sod coupled with labor charges can significantly elevate the overall expenses that hydroseeding liberates us from.

4. Quality

Let’s talk about quality. Hydroseeding provides grass that is:

  • greener, 
  • healthier, and
  • longer lasting than sodding or hand applications;

The reason? There are a few. For example, hydroseeding soils hold moisture better than sod or hand seeded types; therefore, the seeds can germinate quicker. The root establishment is grown more profound into the soil and avoids the shock of being transplanted into foreign soils (it does occur with sod methods). Hydroseeding includes fewer weed seeds. It also gives a greater possibility of planting trees and shrubs and incorporates a tackifier coagulant that will not experience wash out. Finally, hydroseeding seeds are more resistant to external problems adjusted to present soil conditions.

5. Coverage

Hydroseeding creates an evenly covered area. Lawns are thicker and more uniform than a traditionally seeded area, and it consists of a mat of interlocking fibers. Therefore, sparse, patchy areas of grass associated with hand seeding are not a threat in hydroseeding. 

6. Erosion control

The mat of interlocking fibers is a visual pleasure, looking like a full, lush lawn. Additionally, this kind of structure forms a barrier to:

  • keep seed stabilized, 
  • retain moisture, fertilizer, and other healthy growth-enhancing nutrients; 

Hydroseeding can cover: 

  • large, 
  • difficult, and 
  • inaccessible areas (for example slopes, that are too steep for sod applications). 

Hydroseeding covers surfaces ranging from golf courses to roadside and construction sites erosion control.

Tip: To cover large areas, you can use services with a helicopter performed by a professional contractor. 

Aircraft application is common on burned wilderness areas after a fire. In this case, it contains only a soil stabilizer to avoid introducing non-native plant species. Another use is restoring riparian vegetation in cleared land.

Hydroseeding adds to holding moisture and protecting against erosion from wind, rain, sun, and pests by binding elements of the mixture and its influence on the soil.

7. Versatility

Hydroseeding overshadowed both hand seeding and sod benefits and became so popular because of its wide array of professional applications:

  • residential lawns, 
  • soil renovation, 
  • erosion control, 
  • hillside stabilization, 
  • vegetation restoration, 
  • wildfire repair,
  • airport dust control,
  • roadsides, 
  • national parks, 
  • landfills, 
  • city parks, 
  • and so on;

How long does it take for hydroseed to grow?

Is hydroseeding worth the chase? Let’s consider the time it needs to germinate and grow.   

The speed of growth in hydroseeding depends on several factors:

  • watering,
  • climate, 
  • weather,
  • seed mixture;

The average time needed for a lawn to sprout weeds after hydroseed is established as 5-7 days. After 10 days up to two weeks, thanks to mulch and fertilizer included in the mixture, given that the weather is optimal, we can be sure to notice a full-grown lawn on our soil.

What size will a hydroseeded lawn reach within a month after grass seed?

After the process, you should keep taking care of your lawn to ensure proper germination. It means providing it with proper maintenance―starter fertilizer solution applied three times every three-four week period. 

A lawn will grow on an average of eight centimeters (about 3,14 inches).

Your site will sprout green and vigorous as expected with good maintenance and if no additional issues appear (like extreme weather conditions, etc.).

When is the best time to hydroseed?

If you want your grass to grow in good condition, a moderate temperature typical for spring will be beneficial. Heat isn’t the best option.

Which season is better for the new lawn after hydroseed to give roots fast, spring or fall? Both seasons allow for faster germination than in cold and hot periods of the year.

Also, the new lawn after hydroseed in spring or fall doesn’t require as much extra water as it would in the drier summer season. Add mulch and fertilizer to the equation, and in 10 days, your yard sprayed with hydroseed shows roots of the grass in an instant.

Late summer and early fall are also optimal. Not only are temperatures ideal, but the precipitation increases.  

Tip: The ideal temperature for the first six weeks after the hydroseed is between 18 and 23 degrees C. Temperatures that fall too far outside this window can become an issue for the new grass.

Important: For the next several weeks after hydroseed, your lawn will need attentive care.

Hydroseeding―the cost and equipment

The seed that works excellent for hydroseed isn’t expensive. It’s from $0.20 to $0.50 per square foot of grass seeds on average. 

Other expenses associated with hydroseed, like the necessary equipment or contractor’s service, can be costly. It depends on whether we go deeper into this practice (buy a machine) or use services provided by contractors.

The only equipment necessary is a hydroseeding machine. Plus, you’ll need a truck or trailer to put it on it. Mind that the hydroseeding machine has to move along the surface established to become a lawn.

What’s the actual cost of such a machine? It will vary on the market but let’s agree that you can find a decent one for a cost between 3,000-$5,000. Contractors usually go for smaller ones that you can rent cheaply from them. 

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Frequently Asked Questions

While the average hand-sewn lawn takes about half the day, the same area can be hydroseeded to completion in about an hour to an hour and a half.
It's not recommended. There are two ways to deal with it. You can start over, redo the lawn completely from scratch. Otherwise, implement the technique known as overseeding with a power rake and then broadcast seed.
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