Hydromulching

In 1969, Spraygrass began the commercial use of Hydromulching and we have been perfecting our formula ever since.

Hydromulching is a one-step process where seed, fertiliser and mulch are combined together in water with a special, biodegradable binder. The resulting slurry is sprayed onto the soil surface providing mulch interlocking mat that retains moisture for seed germination. Spraygrass®prefers high-quality Woodfibre as its main mulch material but also uses Straw and Sugarcane products which are available locally in Australia.

The mulch is coloured with a non-toxic green dye to give the impression of immediate coverage and to help identify areas requiring ongoing treatment. The dye then fades out of the fibre as new seed begins to grow, providing a seamless transition from seed to grass.

On difficult slopes, additional Binders are used to increase the effectiveness of the application. Hydromulching is best suited to higher rainfall areas such as coastal regions.

Hydromulching, using Australian Native Seed, was developed by Spraygrass as an innovative new approach to reforestation.
Many sites can be rehabilitated with grass seed but there is an increasing demand for the hydromulching of disturbed areas with seeds of Australian native trees, shrubs and creepers. Spraygrass was first in offering this service, realising that there was a need to maintain the natural beauty of the Australian environment and that in most cases only native vegetation would grow and flourish. The use of native species is especially suited to the revegetation of mine overburden and disturbed areas in national parks and adjacent areas.

Site Preparation
We recommended that whenever possible, areas to be seeded should be topsoiled. Ideally, topsoil should be tested from an authorised laboratory to ensure it has the correct ingredients to facilitate the growth of grass and native seeds. Prior to topsoiling, the soil should be tilled (up to 200mm deep) to further facilitate the highest possible yield. If topsoiling is impracticable, the area should be tilled using a suitable machinery designed for this purpose.
Further yield gains can be achieved by clearing the area of weed growth, large stones or other debris.

Spraygrass recommends a Full Soil Chemistry test to determine if additives are required for the Hydromulch mix or applied directly into the soil.

After Care Maintenance
In most cases natural rainfall will provide adequate seed generation however where possible, adequate water should be applied to ensure a continuous and healthy growth of grass. A general guide, 25mm of water should be applied to all seeded areas weekly. It is important that the mulch be kept moist until germination occurs. After that, sufficient watering must be kept up until a healthy sward of grass is achieved.

Contact Spraygrass to discuss how you can reforest large areas quickly and efficiently with native Australian seeds.