FAQs - Frequently Asked Questions

Below we have answered our most frequently asked questions.  Our friendly staff will be happy to explain anything you can't find answered here if you contact our office.

Where is it used?

Hydroseeding and Hydromulching can be used anywhere grass is required.

How is it priced?

All our products are priced on a per m² rate.

Prices vary depending on the size of the project and the type of materials used.

Can I Hydroseed/Hydromulch over weeds?

We recommend that all existing grass and weeds be killed off before installing a new lawn, this can be done by digging out weeds or using a herbicide to kill off existing grass and weeds then rotary hoeing to break up the compacted soil.

What do I have to do to prepare for Hydromulching?

  • Remove undesirable grasses or weeds by spraying with Non Residual Weedkiller such as ‘Round Up’ or similar. Be careful of spray drift to trees, shrubs or plants close by.  (DO NOT SPRAY ON WINDY DAYS)
  • Lightly cultivate the soil by rotary hoeing or by hand.  Add ‘Gypsum’ at a rate of 1kg per m² and re-cultivate  if the topsoil is heavy. If possible get the soil tested for pH and salts.
  • Add more topsoil if necessary, a minimum depth of 50 - 75 mm of a screened sandy loam topsoil is ideal.
  • Order your Hydroseed / Hydromulch (Spray on Lawn)
  • Rake the soil ready for Hydroseeding to your desired heights and levels, make sure you have sufficient soil along path edges and the soil is light and not compacted.

What seed mix can I use?

We offer a variety of seed mixes - different types of Rye, Fescue, Kikuyu and Couch.

We would advice that a blend of Rye and Kikuyu or Couch be used in the warmer months and a Rye and fescue mix in the cooler seasons.

How long does it take for the seed to germinate?

Weather conditions and watering are a big factor in the germination of your grass seed, you should see signs of growth approximately 2-3 weeks after spraying in favourable conditions, for example, time of year the seed is sown, climate, temperature and water availability, if the weather is cold it will slow down the process, if the weather is warmer the seed will germiniate quicker providing sufficient water is available.

How much watering does Hydromulch require to establish?

Water new Hydromulch generously everyday to keep the area premanently moist until germination.  Generally new lawns require approximately 25 litres of water per square metre per week during the warmer seasons, until the lawn is established. 

An example of this calculation is 500m² of lawn watered for six weeks  (25L x 500m² x 6 weeks)equals a total of 75,000litres of water.  You may need to consider current water restrictions or consider intalling a tank. Check with your water supplier for "Warm Season Grass' exemptions during restriction periods.

Can I use grey water on my Hydromulched lawn?

It is not recommended to use grey water unless it has a filter system on it.  Grey water tends to have an impact on the pH levels which in turn can burn the root systems on both grass and plants.

How do I care for my newly Hydromulched lawn?

Following Application

  • Irrigate area generously everyday to keep the area permanently moist until germination occurs, generally speaking, new lawns require approximately 25 litres of water per square metre per week.
  • When your grass is approximately 75mm – 100mm high mow with rotary type mower preferably with a grass catcher, never removing more than 1/3 the grass height in any one cut.  Vary your cuts according to your growth patterns.  EG (rapid growth cut weekly – slow growth fortnightly).
  • When your grass is approximately 10 weeks old feed with a turf builder type fertiliser at the rate of 2.5kg/100m²

Regular Maintenance

Keep up regular maintenance practices to ensure your lawn remains in good condition, i.e. fertilising, weed control and topdressing.  Ensure adequate irrigation practices.

How long before my Hydromulched lawn area can be used?

This may vary depending on weather, watering and ground conditions, and could be approximately six weeks.

Visually if it has a good cover of grass your new lawn will be ready to use. Most times this will be after the second mow.

Mowing - how soon can you mow your new lawn?

When lawn is approximately 75mm - 100mm high, mow with a rotary type mower, preferably with a grass catcher.  Never remove more than 1/3 of the grass height in any one cut. 

Vary your cuts according to your growth patterns.  Rapid growth needs to be cut weekly, slower growth can be cut fortnightly.

Should I weed spray my new lawn?

Herbicides and pesticides should be avoided on your new lawn until it is well established as these strong chemicals may hinder your lawn reaching its full potential.  

After a three month establishment period, we recommend hand weeding or spot spraying of herbicide, to be the best method of weed control on domestic lawns.

Do I need to fertilise my lawn?

A slow release starter fertiliser is provided in the initial installation.  When turf is approximately 9 weeks old feed with a turf builder type fertiliser at the rate of 2.5kg/100m²

Why do I have bare patches or grass is sparse?

Several reasons can cause this problem, the most common would be poor soil preparation, maybe the area has a drainage problem, watering is not even, soil is of a clay base or too sandy, if a soil analysis has not been carried out lack of essential nutrients, pH levels or salt levels could be the cause.

It is very important, before doing any grassing that the soil preparation is done properly.

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