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REPORT: Playgrounds Set To Increase Green Space

By Todd Layt
4 September 2014

Increased Turf and Plants in Playgrounds

Playground Plants

With 2020 vision enhancing the awareness and the importance of increasing green space, and new research and technology now allowing green life in fall zones, playgrounds are about to become a greener solution. Until recently fall zones in playgrounds were not allowed to utilise live plants and turf. Now new testing has shown that certain live plants and turf meet fall zone requirements of the Australian Standard AS/NZ4422:1996. Plants grown in soft fall mulch had a minimum Critical Fall Height of 3.4m and turf grown in Living soft fall had critical fall height of 4 metres, which is far superior to industry standards, and requirements of playground equipment manufacturers.

Keeping kids safe has meant high regulation of surrounding surfaces adjacent to playground equipment. Up until now, only non-green life technologies have bothered to undertake the expensive testing to confirm whether those surfaces meet fall zone requirements. For swings for example this often means surfaces must be safe for kids to fall 2.2 metres. Recent research has resulted in Critical Fall Height reports which prove that certain green life is safe and complies with the Australian Standard, which now allows green life to be used in playground surfacing. The use of plants in playground surfacing has won a KidSafe award for Innovative Design Elements.

Prior to this research only mulch, artificial turf, and a various array of rubber type products met the standards. Landscape Architects and Designers have embraced the 2020 vision, to increase green space by 20 percent by 2020. Now that live plants and turf are allowed again in play grounds, they have another tool to increase the percentage of green life in the landscape.


Playground Lawn

Increased green life has the obvious advantages of cooling our cities, increasing oxygen production, and the increase in health and wellbeing of people. Green infrastructure enhances the healthiness, liveability and sustainability of urban environments. Many studies around the world have confirmed the benefits to humans of being in touch with nature, so why have our children in playgrounds been ignored until now? Basically there has been no financial interest in having green life certified as a viable playground surface. It is a costly and time consuming process, with most certification being done by the manufacturer of playground surfaces. It has been in the domain of private enterprise to have their products certified. Profit margins on plants and turf are far lower than other surfaces, so they have been largely ignored until now.

Children who are exposed to scenes of nature while exercising are more likely to experience health-enhancing effects after activity, according to Coventry University. The researchers found that after the 'green exercise' the children's post-activity blood pressure was significantly lower than it was without the natural environment, indicating that the nature scenes promoted positive health effects including lower blood pressure and hypertension. Many other studies have found health benefits associated with children and nature. In developing guidelines for playground surfaces, authorities need to not only take into account the physical safety of children but also the mental and physical wellbeing of kids. Luckily now both can be achieved using safe green surfaces for playgrounds.


Turf Compaction Test
Turf Compaction Test

Ozbreed, in conjunction with Fiona Robbé Landscape Architects, The Hills BARK BLOWER and Acousto-Scan investigated planting techniques to use when incorporating non-woody plants within the surfacing around play equipment. The research found that plants (especially soft wooded plants) can successfully be grown in mulched fall zone areas in playgrounds and meet standards associated with playground surfacing. In fact the fall height actually improved over time due to the interaction of plant roots and mulch, meaning the introduction of plants can be shown to be safer. This has far reaching ramifications for the playground industry and the health and wellbeing of children, and is another tool for the 2020 vision goals to be reached. The full paper can be found at www.ozbreed.com.au/research-papers/playground-mulch-trial.html.

In other research, turf with specialised underlay has been shown to be safe at a CFH up to 4 metres. Although most heights in play grounds require up to 2.2 metres, it shows how safe turf can be with the right subsurface. The specialised turf underlay called Living Soft Fall™, is comprised of a media made up of stabilised organics and a soft rubber carbon polymer, ideal for growing turf on. Turf grown in this media was tested and passed, both when the turf was alive and dead, even when heavily compacted with a compacting machine. The testing has shown that the media itself cannot compact, and even if the turf dies it will still meet soft fall regulations. Living Soft Fall™ and turf can be used in combination with other playground surfaces. E.g. under swings and in extreme high wear areas, rubber products can be used. The media aids in wearability due to its non-compactive nature. More information about Living Soft Fall™ can be found at www.ozbreed.com.au/living-soft-fall/index.html.


Playground Lawn Test
Testing Playground Turf

Live turf is safe even on a hot day, and a child will not burn their feet. A child is at risk of a burn when a surface exceeds 50°C. Rubber surfaces can reach above 60°C on hot day according to Kidsafe. Recent research on a 40 degree day showed that turf was 45.65°C, whilst artificial turf was 66.95°C. Wood mulch was 64.15°C in the full sun. Temperature readings were reduced by up to 23°C adjacent to Lomandra plantings when compared to surfaces without any plants.


Playground Plants

This research not only has implication for the fall zone in playgrounds, it will make areas outside the fall zone safer and more flexible. Kids playing on lawns or around plants in general can be kept safer, additionally it will allow child care centres more flexibility in moving portable equipment around turf areas outside the fall zone. Increased green space is critical for the health of our cities and the physical and mental health and wellbeing of the population. Now the population can also include children exercising in and around play grounds.





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BIO: Todd Layt ~ Australia's Lawn Care Expert
Lawn Care Expert

It is with gratitude that I welcome Todd Layt as a Special Guest Contributor to The Lawn Guide as Australia's Lawn Care Expert.

Todd's 35 years of experience with lawns began in the 70's when as a young lad, he would help his dad harvest turf on the family farm with a walk behind Ryan Turf Cutter. This love of lawns has continued throughout Todd's life when in the 1980's he was manager of Australia's largest turf farm, and then going into business for himself starting his own turf farm called Abulk Turf.

These days, Todd is most highly regarded as the breeder of the Premium turf variety Sapphire Soft Leaf Buffalo (the world's finest leaf and most shade tolerant Buffalo grass), and the breeder of Australia's first native Zoysia lawn called Nara Native Turf, as well as being the breeder of many popular water-wise plants in Australia.

Todd now heads up Ozbreed, who promote the world's best selling and Australia's lowest maintenance Soft Buffalo lawn… Palmetto Soft Leaf Buffalo, as well as the extremely hardy fine leaf Empire Zoysia.

And if that wasn't enough, Todd Layt is easily Australia's most proficient lawn care author, writing for many lawn industry magazines and online lawn care resources which share honest lawn care information with Australian homeowners and turf professionals alike.

I also acknowledge that the highest quality lawns which Todd Layt promotes through Ozbreed are advertised on The Lawn Guide.

I welcome Todd Layt as Australia's Lawn Care Expert on The Lawn Guide.


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Guest posts covering expert lawn care tips and advice by highly respected Australian turf and plant breeder Todd Layt
Australia's Lawn Care Expert

~ Breeder of Sapphire Buffalo
~ Breeder of Nara Zoysia
~ Breeder of waterwise plants
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