Zoysia - Is it the Best Lawn for Australia?

The following article has been taken from the web site http://www.thelawnguide.com.au/ and used with permission.  Thanks!  It complements a lot of zoysia material already available on this blog, and is worth having available to read.

We are strong advocates of zoysia as a turf in Australia, especially in warmer areas, based on over thirty years of research and development in the tropics.  The slower growth, less pest and disease issues and shade tolerance make it a great lawn.  But anywhere north of Sydney on the coast and in the Perth area and into the northwest areas - Broome and Karratha for example, are also suitable.  Try it yourself!

Zoysia is a well respected turf in Asian countries for golf courses, where it is slowly achieving a more positive use profile in lieu of couch.  It is widely used on soccer football grounds in Thailand, Laos, Japan, Taiwan, South Korea and China.  Zoysia has for many years been the median strip grass of choice in Thailand and adjoining countries, and is of increasing use as a domestic lawn.  Singapore Kranji Racetrack also has horse races on zoysia turf, and most of the better golf courses in Singapore and Malaysia have zoysia fairways, with some already moving to replace couch grass on the greens.

Shade tolerance is a critical issue, with couch especially often dying in areas of shade, and that includes on sporting fields in the shadow of the grandstand.  For home and commercial areas, most want to establish shrubs and often trees around a turfed area.  Once they grow - there is shade!  Zoysia can handle that well.

In the Darwin area there are quite a lot of examples of zoysia growing in deep shade below a large African mahogany tree, as well as in council park areas with trees.  Couch turf cannot survive in shade.  There are other shade tolerant turf species, but none with as good a turf performance as zoysia, overall.

We have seed available of Compadre zoysia and will deliver across Australia.
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Why We Believe Zoysia Is The Best Lawn For Australia


The Lawn Guide is putting massive new focus onto Zoysia grass as the best lawn type for use in all the warmer regions of Australia. Here are all the reasons why we believe in Zoysia to become the future dominant grass type in the country.



Compadre zoysia seed sown  - Darwin

We also recognise that Zoysia will not be the preferred lawn for many people, and we always encourage everyone to carefully look into the lawns they are considering, which may also include having a look at a Zoysia lawn prior to choosing this or any other lawn type for possible purchase. Because at the end of the day, the homeowner should be both fully informed and happy that they not only like the new grass they are purchasing for their home, but that it is also most highly suitable for their needs.

Zoysia Is Soft

Coming in first place is the softness of the Zoysia lawn. Zoysia is a lovely soft lawn to both walk across barefoot, or for children to play on. Zoysia has no irritating qualities to children, adults or pets.

Slow Growth Rates

One of the very best traits in favour of Zoysia is it's slow growth rate. Slow growth equates to far less lawn mowing than other grasses. Less lawn mowing means far less time spent mowing the lawn, or a saving in lawn mowing fees when using a contractor for lawn care. Finally, less lawn mowing means far less carbon emissions from using the lawn mower.



Darwin waterfront area - Compadre zoysia



This slower growth will also mean far less invading of the lawn into surrounding garden beds, which means less garden edging, and almost none of those big garden cleanups which require us to pull up or poison large amounts of grass from our gardens.

Slow growth rates also make Zoysia a very low risk to the Australian environment, where the grass almost never escapes into the wild, and if it ever does, it is very easy and quick to control.

Zoysia also has very low levels of thatch, requiring almost no de-thatching whatsoever through it's life.

Zoysia Is A Tough Guy

Zoysia is tough, it tolerates wear and tear very well, and can even tolerate the rigours of some sporting fields. This trait means Zoysia will not damage as quickly from rigorous activity as some other grasses can.

However, this resistance to wear and tear is balanced out by it's slow growth rate. Once Zoysia does become damaged, it will be slower to repair than a more aggressive lawn type.

So for most Aussie homes and businesses, Zoysia will suit perfectly and tolerate the wear and tear from these environments with ease.

Shade Tolerance

Zoysia has good tolerance to shade. Shade tolerance will be less than Buffalo and Durban Grass, but has greater shade tolerance than Couch and Kikuyu. So if shade is of moderate concern then Zoysia is a worthwhile consideration.

Low Fertiliser Use

Zoysia is also renowned for it very low need for fertiliser throughout the year. For the average homeowner who wants a the lowest maintenance lawn possible, fertilising once a year is often enough to keep the lawn looking good.

For those people who want a more manicured style lawn, then fertilising rates can be bumped up slightly to achieve this desired outcome. Even with this increase, Zoysia will still need less fertiliser than other grasses.

Less fertiliser usage makes Zoysia a great choice for an environmentally responsible lawn.

Low Water Use

Zoysia is a famed low water use grass. In fact, the best way to water Zoysia is to turn off all reticulation and only ever give Zoysia a drink of water when it shows signs of deteriorating from water loss. It's at this time we can give Zoysia a nice deep drink of water until next time it tells us it needs a drink.

Drought Tolerance

Along with most warm season grasses, Zoysia tolerates and recovers from drought very well.

Zoysia appears to brown off quicker than other warm season grasses when drought conditions arrive, but has equally excellent recovery from drought when compared to other grasses.

Studies in this area often show Zoysia to recover more slowly than other grasses, and that's OK. This simply shows Zoysia as a slower growing grass - which it is, and as such it will not grow and repair at the enormous speeds that a highly aggressive grass like Couch will. While drought repair may be slower, the chances of full repair are equal to other grasses, and after drought - Zoysia will continue to provide a far lower maintenance lawn over the years.

Weed Pest and Disease Resistant

The Zoysia family of grasses are highly resistant to many common weeds, pests and diseases. However, this does not mean Zoysia is immune to these problems, just less prone when compared to other lawn types.

When it does become necessary to treat lawn problems, Zoysia has excellent tolerance to all weed, pest and disease treatments, which is on par with Couch grass tolerance to these products.

For these reasons, Zoysia is both low maintenance, and is environmentally friendly.

Weeds

Zoysia has a very thick, dense and tightly woven layer of stolons (above ground runners) which will effectively choke out any new growth of invading weeds. This mat of stolons will continue to thicken over the first 3 years of the lawn being established.

Zoysia is not completely immune to weeds or invading grasses, but instead has very high resistance to being invaded. As a result, Zoysia will require far less weeding maintenance, including the use of weed sprays than most other lawn types.

Lawn Pests

Zoysia has brilliant natural resistance to lawn pests such as grubs and armyworm. Studies have shown that many lawn pests will often avoid a Zoysia lawn whenever there is an alternative lawn type such as Couch nearby, which the pests will invade in preference over the Zoysia, the same studies have shown that some lawn pests can sometimes die after feeding on Zoysia.

Zoysia is not immune to lawn pests, but they are significantly less prone to experiencing these problems.

Less lawn pest problems means less maintenance work and less use of chemical pesticides to treat pests. This makes Zoysia low maintenance and environmentally friendly.

Lawn Disease

Zoysia is also less prone to lawn diseases than other grass types, which also reduces the use of chemical sprays and homeowner maintenance. Making Zoysia an easy care lawn which is environmentally friendly due to the highly reduced use of lawn chemicals.

Zoysia The Way You Like It

The last great Zoysia characteristic is it's ability to be the lawn we all want - and with less effort.

Zoysia can be neglected with almost no watering whatsoever, no fertilising, and no mowing for months, and it will never become out of control or grow to the heights and weediness and thatch levels of grasses like Couch and Kikuyu. You simply give the grass another mow, and it all looks pretty good again.

For almost all lawn owners in Australia who want a nice looking lawn with minimum effort, minimum lawn mowing, least lawn problems, lowered costs, and is most environmentally friendly, then Zoysia is the perfect grass. Fertilise and water the lawn minimally, and mowing when required is all that's required to keep Zoysia up to a very high standard for most homes in Australia.

For those of us who like a manicured lawn, it's simply a case of increasing fertilising, increasing water, and increasing mowing frequency, and Zoysia will develop into a beautifully crafted lawn. And even with all of this, Zoysia will still maintain at this high standard with less work, and at less cost than other grasses.

This Is Why We Love Zoysia

And these are all the reasons we believe Zoysia should become the standard grass for use in all the warmer regions of Australia from now on.

In our opinion, Zoysia is the lowest maintenance lawn available, requiring the least watering, least pesticide use, least fertiliser use, experiences the least problems and requires the least lawn mowing. On top of this, Zoysia is tough and hard wearing, drought tolerant, and looks good under almost all conditions.

Zoysia has the lowest maintenance costs, with the least effort, and with the lowest negative impacts to the environment, and this is why we love Zoysia.

© Copyright ~ The Lawn Guide  www.thelawnguide.com.au

Bahia Grass - Best Turf for Water Efficiency

In the rush to use new turf species and new varieties sometimes this old stalwart is overlooked.

Bahia grass - Paspalum notatum is one of the very best grasses for water efficiency in the monsoonal tropics.  In areas with an extended dry period, it will stay green for the longest, and quickly rebound after extended dry weather - even as long as 7 or 8 months - to continue to thrive.

In the NT, it is best to avoid using the more readily available variety - Pensacola - as it is not as tough as others, tends to be more clumping, often appearing to have bare areas betwen plants and most importantly, it produces abundant seed heads year round so you are always needing to mow.

The older areas of Darwin often have a locally adapted ecotype, of unknown origin.  It produces seeds, but is usually sown by runners [ the other varieties can be too].  It was the predominant lawn in Darwin from the 1950s to about the 1980s, but less used today.  This line is ok as a turf species, and is very tough, and water efficient, but does tend to have a lot of spicules on the leaves - silica spurs that can irritate skin, especially where kids are rolling around on the lawn.  Argentine has less of these spicules, and so does Pensacola.  Its disadvantage is planting by runners, a time consumimg job.

The preferred seed sown line is Argentine.  We originally organised testing of this variety in the early 1970s in the Top End, importing seed from the USA, and first seeds were sown at Berrimah Farm.  It is still there, looking great. 

From the original evaluation, Argentine was selected and used in a lot of the early development around Palmerston in grassed waterways, and in park and landscape development after Cyclone Tracy in the reconstruction of Darwin.  Seed sowing is relatively low cost and a lawn can be developed in 10 -12 weeks.  No Australian production of seed has occurred and all Bahia grass seed is imported from the USA [ so is all couch, zoysia seed etc too].

The advantages of the Argentine variety of Bahia grass include:

• almost no seed head production, except a small amount around January in the north of Australia
• excellent spread and forming a dense surface cover
• very tough, reasonably resistant to wear
• low water needs
• excellent drought resistance and quick recovery when water is applied
• easily mown at around 30 - 45mm high, although it does grow moderately quickly in warm, wet weather - weekly mowing needed in the wet season for domestic lawns; maybe every three weeks in the dry season
• very little thatch development
• mostly free of pests and diseases

All of the Bahia grass types tend to become invaded by the awful weed grass "red seedy grass" or "Mackey's pest", which is botanically Chrysopogon acicularis.  This spreads by very insidious runners and produces huge numbers of seed heads.  There are herbicide solutions available for the control of this weed in Bahia grass, but products are not easily available for domestic use because of commercial packaging sizes - we can do this work if needed.  Efforts to eradicate it will pay big dividends.  Often seed is carried on legs, clothes, equipment and similar items so a biosecurity approach is needed to keep it out in the first place.

For a large lawn or open space area and especially where there is a need to be prudent with water use in the dry season.......Argentine Bahia grass is a good option.  It is also widely used as a water efficient turf in Florida [which is where the photo was taken].  Do not over water, as this induces ingress by other water loving species, including broad leaved carpet grass in our environment.

Endosulfan Registration Cancelled in Australia

Registration of Endosulfan Cancelled in Australia

The Australian Pesticides and Veterinary Medicines Authority (APVMA) on Tuesday advised that it had cancelled the registration of the insecticide endosulfan.

This decision followed a recent assessment of new information by the Department of Sustainability, Environment, Water, Population and Communities (DSEWPC) that the prolonged use of endosulfan is likely to lead to adverse environmental effects via spray drift and run-off.
A full risk assessment conducted by DSEWPC concluded that these long term risks could not be mitigated through restrictions on use or variations to label instructions.

From 12 October 2010, agricultural products containing endosulfan are no longer registered in Australia. The three current approvals for endosulfan have also been cancelled, and the five products containing the chemical will be phased out over the next two years.

Read the Full Report here.

Typical lawn grub damage

The damage was done quickly and very decisively - lawn grubs can do this level of damage in a few days.

The area is now recovering, albeit slowly!

Turf Damage in the Pre -wet Season!

Recently we installed a new turf area using Empire zoysia. This is a very good turf, well suited to tropical Australia.

All the normal agronomic practices were carried out and the turf laid, fertiliser added, and all went well for about 4 weeks. Then disaster..........the client freaked out, and when we saw it we did too........The culprit? Army worm and sod web worm damage, and was it massive. Over half the area - 40sq m - seriously damaged in less than a week.

However, a quick investigation found the little grubs, and there were a lot!!!!! Spraying had to be done, to institute rapid control, and yes it all did work out, with the lawn now, a week later, showing good recovery.

It is a while since the damage caused was so great on any area we manage - switching to slow release nitrogen fertiliser is a prudent move to help manage this problem. All our clients have this practice recommended as part of our management protocols supplied with a new turf area. But in this case, readily available nitrogen was used, as part of the starter fertiliser NPK mix. And it seems as if it was part of the problem.

Moral - take care of the turf NOW when lawn grubs can be present; and act quickly to spray them with a suitable insecticide - and remember too with lawn grubs, it is best to spray in the evening when they are active.

This photo was what it looked like before the lawngrubs invaded.