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Seeding, or indeed reseeding, can be a tricky thing to perfect. As a lawn owner you want to get it right the first time, as you may only have one good shot at it. So with this sort of pressure in mind, when is the best time to sow lawn seed?

Autumn is regarded by many as the perfect time of year to establish a new grass. Let’s have a look at the facts of the matter, to work out once and for all whether this statement is true.

The Type of Grass Planted

Grasses can generally be bundled into two different categories – warm season and cool season. In the most basic of terms, warm season grasses prefer warmer conditions, and cool season grasses prefer (you guessed it) cooler conditions. Australia, being the warm part of the world that it is, has conditions that are generally more suitable for warm season grasses.

The likes of Couch, Kikuyu and Buffalo are all warm season grasses, and have become popular thanks to their ability to take the Australian heat. Save for Tasmania and some parts of southern Victoria, you’ll overwhelmingly see warm season grasses being planted in Australian front and backyards.

This is important when it comes to seeding timing, as warm and cool season grasses require slightly different conditions to establish as they should. So what conditions do warm season seeds require?

The Perfect Temperature

In order to establish a warm season seed you want a soil that sits at 18C or above for an extended period – ideally a couple of weeks – while the seed sprouts and takes hold. If you drop below that temperature the seed will go semi-dormant and won’t establish properly.

In temperate parts of Australia, below the sub-tropics, soils in winter will be well below this mark. The cool mornings of spring will also affect a seed’s ability to establish, so that season is out too. Summer will obviously bring the warmest temperatures of the year, and as such will allow your seeds to comfortably establish. And finally, autumn enjoys the residual warmth of the summer, particularly in the soil, so will also meet the temperature needs of a warm season grass seed.

So we’re left with summer and autumn as warm season seed growing options. But what else do we need to think about?

The Right Amount of Moisture

An establishing lawn is a drinking machine. It needs to be kept constantly moist in order for it to take hold and establish as quickly as possible. Newly sown seed usually requires multiple soaks a day in order for the soil it sits in to stay at the ideal moisture level.

In summer this moisture level is far more difficult to maintain. With long hot days and extreme UV sapping the moisture from the soil, a lawn owner will find themselves on the hose far more often than if the lawn is planted in autumn, when milder temperatures allow for a more relaxed approach.

The Less Extreme the Better

Indeed, the extremes of summer can serve to stress a newly planted grass out, whether the right amount of water is being applied or not. If your newly establishing blades are subjected to multiple days of 40C+, you’ll find that the stress and strain of the conditions will force your new blades to put a focus on surviving rather than growing in the heat. Again, autumn provides a less stressful start to a new lawn’s life.

A Peak Growing Period

Added to all that, autumn is actually most warm season grasses’ peak growing period – the time of year in which they’re most active. That means that a newly sown turf will establish quicker at this time of year than any other.

All in all, autumn represents the perfect time to sow your new warm season grass. But if you’ve got any further questions on when, where and how to sow, don’t hesitate to contact the friendly team at McKays!