Hydroseeding is accomplished by using specialized equipment designed exclusively for the process. Materials used in Hydroseeding are water, seed, fertilizer, tackifier (an organic substance made from guar gum) and wood/fiber mulch. Our process mixes turf or native grass seed and fertilizer with water in a Hydroseeding unit. An agitator mixes all of the ingredients into a thick slurry. The mixture is applied using a Hydroseed unit which has a pump with either with a long range turret, or a hose to allow for more precise coverage, depending on the terrain that is being seeded. Hydroseeding can be either a one step or multi step process. We use a multi step process, which applies the seed first to ensure more seed contact with the soil. The next step is either the straw mulch or fiber mulch.
The process continues in one of two ways. Straw is applied to the seeded area using certified weed free straw through a straw blower or processor. It is applied at a rate of 2 tons per acre. The straw can also be pushed in, or “crimped” into the soil with a mechanical device attached to a tractor. Once uniform coverage of straw is applied, a mixture of water and guar gum/tackifier, a natural glue like product which keeps the straw from blowing away and holds in moisture, is applied over the straw and seed. Straw also helps keep moisture in the soil and aids in erosion control. The straw will naturally decay, providing nutrients to the soil.
The other process is Hydromulching. After the seed has been applied, water, fiber mulch, and guar gum/tackifier are mixed in the Hydroseed unit. The fiber mulch can be of a wood cellulose fiber, paper fiber, a combination of the two or even other types of mulch listed below. Wood fiber is our preferred method and is generally applied at the rate 2000 to 3500 lbs per acre, depending on the slope of the terrain. The mulch combined with the tackifier reduces moisture evaporation from the soil and assists in erosion control by keeping the disturbed soil in place.
Benefits of Hydroseeding:
- Low initial cost compared to other treatments.
- Immediate protection from erosion due to rain drop impact or wind.
- Vegetation provided by seed in this treatment provides long-term control of erosion.
Please note there is an inconsistency of terms in the business. Hydroseeding is sometimes referred to as Hydromulching or Hydraulic seeding. They generally are all the same process, except whether a company uses the one step or multi step process.
Types of mulch available include:
Wood fiber mulch,
Bonded fiber mulch – Wood fiber is mixed with bonding agents to
Flexterra – Proprietary mulch made by Profile Products.