Hydroseeding Techniques For Construction

Manual seeding is a thing of the past. One of the fastest ways to establish vegetation as a means of combating erosion is hydroseeding. This method makes use of water mixed with fertilizer and mulch then sprayed onto the soil. Hydroseeding is a technique wherein the combination of a slurry mulch sprays onto the ground utilising a tank. It quickly spreads onto the land where the seeds will eventually germinate.

The mulch is a slurry mix of natural ingredients that enhance the growth of the seed. It is a more effective method than using dry seeds. It can be used on vacant lands, on embankments, or for the lawn. Sloping areas like lawns and hillsides often benefited from this technique because it provides even coverage. There’s also no need to use straws; there’s no mess at all.


  • Through hydroseeding, the ground is provided with temporary protection to specific areas until the seeds can grow into fullness.
  • Once the mulch mixture has landed on to the ground from a spray gun or hose, it creates a carpet-like cover that retains the moisture of the seeds, holds them in place for germination, and protects them from erosion caused by water and wind.
  • Various ingredients make up mulch. They can be from furrowed cardboard, wood pieces, or even old newspapers. Also, they could also contain sludge from mills, sawdust or a mix of the following. There are many varieties of mulch categorized to their specific uses and capabilities as well as price ranges.

  • There are different types of mulch, and they are also not created equal. The fibre within the mulch is the key factor to its effectivity. The seed growth will rely on the application and moisture-retaining characteristic.
  • Any kind of fertilizer is universally compatible with hydroseeding. Such areas where access is very limited will still be able to gain from hydroseeding with long-acting ingredients or from a mix of something that only requires very few application. Areas that can be accessed quickly can be sprayed with hydroseeding once more.
  • The mixture also contains a tackifier. It is the glue that makes the ‘carpet’ stay in its place no matter nature’ influences. Sloping areas are best covered with tackifiers, as much as other areas that are prone to erosion.
  • Other additional ingredients may also be added to the slurry if it is necessary. Gypsum and lime soil types or other organics to may also be added to the mixture.
  • The combination of hydroseeding mixtures will rely on the area of assessment and the following criteria: topography, weather and general climate, soil characteristic, maintenance, and the availability of water, among others.

Types of Mulch

Wood type mulch is usually used at 2000 pounds per every acre of land. During hot temperatures, about 3000 pounds will give the ability to retain more moisture and increase its effectivity. Tackifier based on guar will increase the success of getting good grass growth.

Paper type mulch is sprayed at up to 1500 pounds per every acre of land. Its application will prove to be more active with an additional ingredient polyacrylamide. Professionals tend to stop at 2500 pounds per every acre because paper characteristically dries up and becomes crusty that can hinder the proper growth of the seeds.

Bonded Fiber type used at 3000 pounds per every acre is the standard amount. For the best probability of grass coverage, it would be a lot better to use 4000 pounds despite unpleasant weather conditions, rain or shine. Natural elements such as rainwater or irrigation will always be necessary for the growth of grass.

As an additive, Guar tackifier would be acceptable at 25 to 150 pounds per every acre. Technically, 60 pounds is used up per every acre of land, but it became a regular ingredient for hydroseeding for years. Recommendations for treatment will depend on the area or property that needs hydroseeding.


There is a correct procedure to be followed step by step when doing hydroseeding for a higher success rate. Its important to think carefully about your hydroseeding for revegetation. Multi-steps exists for the assurance that the seed will come in contact with the soil. The single-step process is for the application of the mixture, the rate of seeds will increase for those seeds that did not come in contact with the soil. New hydroseeding applications shall commence getting back to spots that are weak and need more attention.

Only half an hour is the time allowed for the seed to be placed in the mulcher and for the mulcher to get drained. Hydroseeding should continue until the proper coverage has been achieved.