Summer Lawn Care

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A healthy lawn can easily withstand a lot of activity on it without becoming stressed. Proper mowing, fertilising, watering and weed control keep a lawn healthy all summer long, with minimal effort.



Move the lawn at a higher level to keep it in better shape. Shorter lawns require more water because the soil is more exposed. Keeping the lawn taller allows the grass leaf to shade the soil, making it cooler with less exposure for evaporation. Keep the height to at least 40mm.

Never mow more than 1/3 of the leaf tip off in any single mowing. The lawn will go into stress and become thin & patchy. If the lawn is so tall that more than 1/3 of the leaf would be cut, mow several times over a few consecutive days taking a little off at a time. 

Why does the lawn look “white” after mowing? That’s a sign that the mower blades need sharpening. When blades are blunt and they tend to “tear” the blades rather than cut them. Not only do sharper blades give a better finish, they also make mowing easier.



Apply fertiliser early in the summer to boost the lawn through hotter months. Use a good granular slow release fertiliser such as the Sir Walter Fertiliser which has high levels of nitrogen for good growth & colour, phosphorous for strong root growth and potassium for metabolism & respiration.

Apply the fertiliser at the recommended rate, but in one section of the lawn in the space of roughly 1m x 1m, apply twice the amount. If after few weeks this area has better colour and is better than the rest of the lawn, fertilise again at the recommended rate. Sometimes a lawn may need an extra boost, especially if there have been periods of high rainfall which can leech all of the nutrients out of the soil.



In the summer months, your lawn needs 30ml all over on each of your watering days. You can check this by placing measuring cups at different points on your lawn and time how long it takes for the last cup to fill to 30ml. Depending on your water pressure, that could take anywhere up to 30+ minutes. By watering deeply and infrequently stronger, deeper root growth is encouraged. This increases the drought tolerance of the lawn.

For efficient watering, apply a wetting agent to increase the soil’s water absorbency, especially on sandy soils, and to ensure that it isn’t “hydrophobic”, repelling water. 

Weed Control

Over summer, a healthy lawn will grow a tight thick mat that prevents weed from growing. If a few weeds manage to invade, use Sir Walter Weed Control to control them.  

A healthy lawn is lush green, withstands activity, is drought tolerant and weed resistant, and easier to maintain.