Recreating the Country blog |
When wallaby grasses are seeding, you know it's nearly Christmas‘It’s incredible how tough wallaby grasses are, growing very happily in the most inhospitable conditions including clay. On the Bellarine we have 6 types of wallaby grass and they can be identified by the number of rows and length of hairs on the seed.’ Go glorious native grasses! Like Sophie, I get excited when I discover a surviving remnant patch of native grass. Just this morning, walking along the nature strip on the way to feed my neighbours chooks, growing in an area too dry for exotic grasses, was a beautiful clump of Common Wallaby-grass, Rytidosperma caespitosum. What a delight! Surviving native plants, like these wallaby grasses, provide quiet reassurance that Australian nature is resilient, surviving in places that are completely altered and crudely managed like town and city nature strips. Wallaby grasses are often the last survivors of local plants because they are tough, long lived and opportunistic. If there is somewhere in a lawn or garden where other plants struggle and a bare patch develops, perhaps affected by the roots of a nearby tree, wallaby grass will 'magically' appear – that’s been my experience. By the way, Common Wallaby-grass makes a rustic low maintenance lawn because it forms small 10cm wide, fine-leaf clumps, rarely reaching more than 7cm tall. Its long lived fluffy spring flowers/seed heads are also attractive, growing on thin 15cm straw coloured stems. It can be quite variable, so when you find a remnant patch that you like, use those plants as a source of seed for a lawn or grassland restoration project. As a lawn, Common Wallaby-grass only needs occasional mowing, perhaps just once a year As proof of their toughness, wallaby grasses stay green all year without watering. They are also frost tolerant, recover quickly after fire and grow happily in a variety of well drained clay or sandy soils. If it’s too boggy or swampy then look no further than Common Swamp Wallaby-grass, Amphibromus nervosus. Its leafy tufts grow to 30 cm tall, its flowers and seed heads beautifully displaying at about 1m. Yeek! the botanical name? The general botanical name for wallaby grasses is Rytidosperma which is Greek for wrinkled seed - rhytis (wrinkle) & sperma (seed). When I first started growing native plants in the 1980’s, wallaby grasses were generally known as Danthonia which changed in 1993 to Austrodanthonia. In 2011 the genus changed again to its present tongue twister name of Rytidosperma (pronounced; rit-id-o-sperm-a). Australia has about 30 species of wallaby grasses that are widespread in the temperate parts of each State. They are often seen on roadsides (and nature strips), in open plains country, grassy woodlands and on lightly forested slopes. They are never alone, because a number of different species of wallaby grass usually grow together. For example, the Greater Melbourne area has 19 species, many of these growing side by side in the same patch of remnant grassland. Propagating wallaby grass... ...from seed Wallaby grass seed is easy and convenient to collect when it has turned a golden straw colour. Simply cut off the flower heads and store them in a bucket or paper bag for later cleaning. Record when & where the seed was collected and harvest from 20 or more plants to ensure good genetic diversity. If you don’t know its name, take a photo for future reference and to post the photo on iNaturalist (it’s a free app) for identification. Clean the seed by rubbing the flower heads over a garden sieve until most of it falls through leaving the stem and empty husks behind in the sieve. ‘Late spring/early summer is the best time to identify wallaby grass and collect seed as they wave their fluffy straw-coloured heads in the breeze.’ The seed germinates at any time of the year though it needs constant moisture to germinate well. It is a poor competitor at this early stage, so the best results are achieved with a weed free growing environment. The seeds need no pre-treatment for full germination in 7 – 14 days. Seeds can be sown directly into tubes (a small pinch of seed per tube), spread on seedling trays for pricking out later, or direct seeded into gardens and paddocks that need to be kept weed free for several months. The recommended sowing rates for big projects is 1 – 2 kg/ha of cleaned seed (with the stems and husks removed like the seeds shown in zip-lock bags above). Because wallaby grass seed is light, it will blow away in a breeze. So pelletising the seed with clay makes sowing in the field on a large scale more successful and practical. Below are 6 species of wallaby grass seed. The three rows of fine hairs visible on the seeds is unique to each species and is used for identification. I have included some of George Stolfo's line drawings for comparison, scanned from an early edition of Flora of Melbourne. The latest (4th) edition is a great reference for detailed descriptions of 19 species of wallaby grass. Hover over each image for the species name and click to enlarge; ...by division Established clumps of wallaby grass growing in the garden can be divided in winter like many clumping perennials. The best time for this is in the cool weather when the soil is moist and the plants are dormant. It is a slower method though it does provide certainty of form and size for landscapers, which is desirable when creating a uniform soft boarder in a native garden. Landscaping As mentioned above, Wallaby grasses are a useful landscaping plant to create garden edges, as statement clumps, and for creating a contrast with flowering native herbs and shrubs. Landscapers know that ‘vertical foliage pops’ in garden design and with such a variety of wallaby grasses to choose from, they are well suited to most landscaping projects. The icing on the cake is their unique, fluffy seed tufts that last for months, providing a attractive display when most of the other plants are showing signs of stress in the hot summer sun. Farming Wallaby grasses are nutritious for stock, productive and persistent when grazed intermittently or at a low intensity. Researchers have shown that it is possible to maintain native grassland health and diversity by resting grasslands to allow them to recover after grazing or by using a less intensive application of continuous grazing - less animals/ha prevents overgrazing and a large increasing soil nitrogen & phosphorus that kill native grassland plants. A moderately grazed, diverse native perennial grassland will cope well with drought and respond quickly to rainfall. Perennial grassland plants like wallaby grasses, provide the maximum production by extracting nutrients and soil moisture from deep in the soil profile. Revegetation Wallaby grasses need very little maintenance and are particularly useful when used to restore eroded sites or where the soil is poor and shallow. Their toughness makes them ideal for deficient growing conditions where other native grasses and herbs may not survive. They are compatible and supportive of other grassland species and a reliable inclusion in direct seeding mixes or mixed planting with tubestock. To ensure the survival of wallaby grasses in gardens or grasslands, plant clumps of the same species in groups of 20 - 50 plants. This greatly improves pollination and provides a better resource for wildlife. The number of plants in the clumps will vary with the size of the garden - for example, in large gardens, groups of 50 plants is appropriate and looks very impressive. A close plant spacing of 15cm - 30cm helps discourage weeds from invading after the wallaby grasses establish and enhances the survival of the new plants. The ecology of wallaby grass Having a very nutritious leaf which stays green throughout the year, wallaby grass is important to grazing animals like wallabies and kangaroos. Above the ground, tufts of wallaby grasses provide excellent habitat for skinks, frogs and small mammals. Insects live under the green tufts and the straw thatch that hugs and protects the soil surface. Wallaby grass provides habitat and food for many butterflies and moths, including the White-banded Grass-dart, the Shouldered Brown and the critically endangered Golden Sun Moth. The Golden Sun Moth has a 2 year lifecycle, spending most of its life underground as a caterpillar living on wallaby grass roots. After 2 years and only on a warm dry day they emerge as a beautiful moth to mate, lay eggs. Bizarrely the moth has no mouth and is unable to eat. It dies after mating or within 4 days of emerging from the roots of the wallaby grass. Maintenance
Wallaby grasses need little/no maintenance for a natural look in the garden or in a restored grassland. They respond well to cool burning in spring/autumn and will green up within a few weeks after rain or hand watering. If the seed isn't harvested, it spreads naturally, forming beautiful clumps on bare patches, supporting wildlife and adding an element of surprise to an evolving native garden or grassland.
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We would all benefit from making our cities and towns nature positive With more than 90% of Australians now living in cities and towns, some important questions about restoring urban environments have managed to push-up through the pavement, amidst the engine roar of busses and cars, the rumble of trains and the clink of coffee cups. Amongst this background noise of hectic human activity, is it possible to restore nature to urban environments and what would a more natural and inclusive urban landscape look like? I’m imagining quieter, leafier and more picturesque towns and cities that are healthy places for both humans and Australian wildlife to live. These may bear very little resemblance to the forests and woodlands that were cleared to make way for urban development. Rewilding urban green spaces is more likely to be a process of reimagining and recreating healthy landscapes that suit modern living, while accommodating a diversity of Australian wildlife, even species that are endangered in the wild. Does this sound like an impossible dream? In this series of blogs, I want to open a discussion about bringing nature back to our cities and towns, and what we can do to support wildlife in our urban backyards, streets and parklands. Part 1. How we would benefit from rethinking the landscapes of our cities and towns to be more inclusive of nature? Part 2. How to design urban gardens that attract native wildlife? I'll explore what these wildlife habitats would like, plus the where and the how. Part 3. Ten beautiful and resilient indigenous shrubs that would grace any home garden and bring back useful native insects and wonderful communities of small birds. How do we benefit? Nature provides Ecological Services (ES's) that we depend on every day. What's an ES? Do you remember growing up, your parents/guardians washed your clothes, put them away, put food on the table and maintained a safe home environment. Mostly this happened without you being aware of it. Your parents/guardians were providing home based ecological services. Their discreet efforts kept the home environment ticking over, its residents healthy, safe and fed. (Note: Ecology is derived from the Greek word oikos, which means house/home) In a similar way, nature provides these ‘discreet’ services in the outside environment to maintain nature’s many homes. Nature’s ecological services are on a huge scale because they maintain the vital needs of all lifeforms on this planet. Included below are 20 ecological services (ES) that healthy biodiverse ecosystems can provide to urban communities. These ES’s are dispersed through Part 1 in consumable bites.
These ES's happen quietly, as if magically, without us lifting a finger, though we deeply depend on them, just as we once depended on the help and support of our parents/guardians when we were children. Providing all these ecological services in cities and towns where we need them, as well as in forests and woodlands hundreds of kilometers away, would benefit all city dwellers. You can likely appreciate how much healthier our urban environments would be if these services were 'on tap,' happening immediately around us. Sadly our native fauna and the services that they provide are being pushed further and further away from where we live with the development of the ever expanding high density tree-deprived suburbs. These newer suburbs don’t have much room for gardens, with the added foolishness of houses with black roofs which are recognised heat sinks, up to 10 degrees warmer on hot days, which is very dangerous for the vulnerable in our communities. A recent study by researchers from Griffith University & University of Queensland confirmed declining small bird populations in Brisbane due to poor urban design; ‘We examined 82 bird species across 42 landscape types in Brisbane. The range of landscapes encompassed parks, bushland reserves, and industrial and residential areas. Our findings were clear: urbanisation, particularly the increase in built infrastructure and the loss of green spaces, was linked to a decline in the bird communities we find most attractive.’ (Oh & Suarez-Castro, 2024) Four more ecological services nature provides: The beauty in biodiverse native gardens is good for us Gardens are uplifting, particularly when they support wildlife. It’s pleasing when we see beautiful flowers on a banksia or bottlebrush but when we see a honeyeater hanging upside-down precariously feeding on the nectar, our endorphins are multiplied many fold. If you have been following the steady growth of research on the many health benefits through contact with nature, you already know it's very important to us. Here are two interesting examples of this research; ‘Biodiverse nature has particular positive benefit for mental well-being. Multi-sensory elements such as bird or frog sounds or wildflower smells have well-documented beneficial effects on mental restoration, calm and creativity.’ (Zoe Myers, Australian Urban Design Research Centre, the University of WA) 'Recent research has shown beneficial effects to our lung microbiome when we live within 300 metres of natural areas.' (ABC Health Report, August 17th 2024) After watching the nightly news we definitely need some calming influences and it’s good for our mental health to be reminded that the world is a wonderful place after all. We have an insatiable need for good news stories about people and their gardens. To satisfy our thirst for garden related stories there are at least 8 monthly magazines on newsagent shelves providing sweet sips of inspiration.
Gardens moderate our living environment The global ‘urban forest’ movement recognises that our cities will need more shade in the future to be liveable, particularly when Meteorologists agree that weather extremes are on the increase. For example, Melbourne has plans to increase the tree cover in its city streets and parks to 40% by 2040 and Sydney, more conservatively, has opted for only 27% tree cover by 2050. So at least the ‘powers that be’ recognise the important role of trees in cooling our living environment. Adding more shade trees is wonderful, though native shrubs and understorey plants also moderate the weather. They provide shelter from hot and cold winds near ground level, which is where we spend most of our time. They also provide much needed habitat for the many species of native insect and small bird that seem to have been forgotten in the urban forest concept. Is it really an Australian urban 'forest' if there is little or no Australian wildlife?
Providing homes for threatened and endangered flora and fauna is becoming more important with the continued clearing of native vegetation in every State (and no, it’s not slowing down). We now have 2,224 species and ecosystems on the Federal threatened list and the number is growing every year. ‘They took all the trees put 'em in a tree museum, and they charged the people a dollar an' a half just to see 'em.’ The ring of truth to Joni Mitchell’s Yellow Taxi lyrics from 1970 is getting louder each year. Planting 'exhibits' of threatened species, like the Gibraltar Range Waratah’s (Telopea aspera), in our own gardens to protect them from extinction may seem a radical suggestion but at least we would save them from being completely lost to future generations. Providing homes in our cities and towns for the many threatened native plants could also become a source of rare seed that would be available to re-establish lost rural populations in the future. As an added benefit, the Waratah's magnificent red flowers may inspire you to write poetry as would the other members of the protea family; banksia, grevillea, hakea, isopogan, leucadendron. They are also magnets to honeyeaters, beneficial insects, gliders and small possums and can be combined with other native plants to imitate biodiverse natural environments that will support a diversity of native wildlife. Three more ecological services nature provides: Tourism is built on a foundation of unique wildlife These disappearing plants and animals are unique to our country and attract overseas tourists who travel long distances to experience something unique. To smell the scent of eucalyptus in a Mountain Ash forest (now critically endangered in the central highlands), to see a Koala sleeping in the fork of a tree (now endangered in Qld, NSW and ACT) and to hear the most beautiful and unique birdsong in the world in a woodland or forest anywhere in Australia (now over one quarter of Australian bird species are considered threatened). What dollar value should a nation put on these Australian icons and to protect the natural landscapes that they live in? Perhaps the dollars lost to the tourism industry is a stronger motivator for governments to take meaningful action. We seem unaware that we are slowly losing a billion dollar industry as well as 'nature', which Sir David Attenborough describes as 'the life blood of our society.' Take it away one more time Joni... 'Don't it always seem to go That you don't know what you've got 'til it's gone They paved paradise, put up a parking lot (Ooh, bop-bop-bop-bop,...)' Four more ecological services nature provides: Connecting with nature Inviting birds, insects, gliders and possums back to our cities and towns (and learning to live with them - it was once their undisputed home) requires thoughtful landscape design that can also provide the opportunity for a deeper connection with nature. This is often experienced as a source of joy and enriched wellbeing. It can also provide opportunities for creative inspiration in work and play that are declining as we retreat into our urban ‘ivory towers.’ Sophie lives in a Victorian town. She’d like to share this moment of inspiration from her garden; ‘I love watching the Red-browed Finches in my garden, they land on the wallaby grasses and ride the flower-heads to the ground where they carefully pick out the seeds.’ We've each had moments of connection with nature in our home gardens and natural places. These stories shine a light on the potential for nature positive urban revegetation which would re-establish a closeness with nature that is very important to our mental health. To read more about this topic; https://www.recreatingthecountry.com.au/blog/connecting-with-nature-a-journey-into-mindfulness If you have a story to share, I’d love to include it in my next post. There is a better way... We don’t have to lose this important connection with wildlife in our urban centres. Our own gardens can play an important part and there are lots of public grassy spaces in streets, parks and gardens and even cemeteries that could conveniently and safely be repurposed to provide layers of biodiversity as well as cooling shade and shelter from hot & cold winds. It’s a matter of reimagining the spaces that we already have, to creatively make them nature positive, so as to provide for the multiple needs all of the planets species, not just Homo sapiens. A future blog will look at the how and the where of designing gardens to make urban places nature positive to bring back Australian wildlife A deep dive into more than 1,000 years history of the Melbourne Cricket Ground The year is 2016 and I’m looking through the window of the lounge above the hallowed grounds of the Melbourne Cricket Ground (MCG or G). I’m feeling a bit awe-struck because like many Australians I associate the MCG with big events: the 1956 Olympics, the VFL/AFL grand final and extravaganza concerts like Guns N’ Roses, Ed Sheeran and recently Taylor Swift. Apparently, the crusader Billy Graham attracted the biggest crowd of 130,000 in 1959. Graham’s sermon to his many devotees segues with my view that the MCG is considered a ‘spiritual place,’ indeed a ‘sacred place’ by many Australians. This is the product of human folklore that began long before modern history, possibly over 40,000 years ago. More about that later. Sadly, I wasn’t at the MCG to yell myself hoarse at the footy or to enjoy a concert. I was there for a National Landcare conference to speak on sustainable design and conserving biodiversity. Sounds a little ‘ho-hum’ in comparison doesn’t it? For most Australians, ‘sustainable biorich revegetation’ would sound very mundane, and that thought worried me a lot as I looked through the window. Here we were at the MCG, about 400 members of an Australia wide community based network that works very hard to improve the natural environment for the good of everyone. Yet for most people this event and the admirable efforts of Landcare sit well below their radar. How to put a Landcare event on their radar? Standing at that window, I imagined a group of Landcarers walking onto the MCG and planting a River Red Gum at its centre, about the middle of the cricket pitch. Just temporarily, as a conservation statement of course! I also imagined the nation-wide consternation and the widespread outrage of the Australian community. Front page headlines in newspapers around Australia might have read: ‘MCG defiled by Landare’ ‘Landcare desecrates the hallowed ground of the G’ ‘Landcare madness!’ Other more appropriate headlines could have been; ‘Landcare nods to the ancient history of G’ ‘Landcare did what? – now you’re all listening!’ ‘The River Red Gum returns to the MCG after 161 years' The brash, slightly absurd, very cheeky and highly illegal act of planting a tree in a 2ha paddock called the G would likely go viral around the world because it’s ridiculous, funny and surprising. I asked myself as I imagined the River Red Gum growing and spreading its branches to welcome back the thousands of different species of insect, bird, marsupial, reptile and amphibian to the Melbourne Cricket Ground. 'Is that what we need to do to get everyone’s attention?' And when we do have the world’s attention, for 30 seconds if we’re lucky, could we slip in a powerfully worded, very chilling statement about the 'train crash' of an extinction crisis affecting most of the flora and fauna in Australia. Or is that just being a party pooper? Let me put this fictional, though notable, event into perspective: 1. A River Red Gum is planted in the middle of the MCG in 2016 2. At this time, the MCG had been a stadium for big events for 161 years. The original cricket ground nearby was in a flood zone, the cricketers changing rooms regularly being washed downstream 3. The MCG and surrounds was the spiritual home and a traditional gathering place for the Wurundjeri Woi Wurrung people for more than 40,000 years 4. The wetlands and banks of the Birrarung (Yarra River) are very likely to have supported 400 year old River Red Gums, growing on nearby flood zones and on the MCG. Prominent among the other tree species were; Manna Gum, Swamp Gum, Blackwood, Lightwood, Silver Wattle, Black Wattle, Black Sheoak and Sweet Bursaria. 5. The 2ha MCG would have very likely supported about 8 very large River Red Gums scattered across its hallowed grounds. The historic spacing for old gums was 30-50m, which is about 4-10 trees/ha. 6. The first settlers described Melbourne as a ‘nobleman’s park,’ because regular cultural burning had kept it open and thinly wooded 7. The dominant grasses on the fertile volcanic soils of the MCG are likely to have been Kangaroo Grass, Weeping Grass, wallaby grasses and various tussock grasses. Intermixed with these would have been a rich and diverse list of flowering herbs and orchids cultivated for food and medicines by the Wurundjeri for thousands of years. The MCG's unimaginably deep past The MCG has had an unimaginably deep past as a sacred place for the Wurundjeri Woi Wurrung people. They would have gathered there from regions far and wide across their shared language group, to be ‘welcomed to country,’ tell stories, share jokes, sing traditional songs, wow onlookers with traditional dances, make new friends and play games. A very popular game was Marngrook, the Wurundjeri football game played with a tightly tied possum skin, which is likely to have given birth to our own unique game of football. Two large teams could have played the game around the trees on the MCG, marking and kicking in an elaborate game of ‘keepings off’ that continued for hours. It seems very fitting then, that the MCG continues to be the spiritual home of Australian Rules football as well as an important meeting place for the many diverse cultures of the world that converge there and that now make up multicultural Melbourne. ...and the River Red Gums are still there! The scattered trees which were a feature of the traditional Wurundjeri football game are now gone, or are they? I like to think that they have transformed/mutated into the eight, unusually tall, goal and point posts at the ends of the oval, which coincidentally is the approximate number of River Red Gums that would have grown on the MCG 190 years ago when Melbourne was called Naarm. The importance of paddock trees It’s clearly not appropriate to plant trees on the hallowed turf of the MCG, though the scary truth is that Australian wildlife is in crisis and the country desperately needs more paddock trees to be planted and the remaining ancient trees protected (and encouraged to regenerate). Paddock trees restored across our 'wide brown land' would support the migration of stranded wildlife, help our flora and fauna adapt to a warming, drying climate and buffer the damaging effects of strong winds in rural areas; yes scattered paddock trees are a very effective windbreak, unlike the the goal and point posts on the MCG. To read more about the many benefits of paddock trees click here To learn how to plant & restore paddock trees click here To read about the economics of protecting and planting paddock trees click here To buy your copy of 'Recreating the Country. Ten key principles for designing sustainable landscapes' by Stephen Murphy click here |
'RECREATING the COUNTRY'
Ten key principles for designing sustainable landscapes Second edition Updated & expanded Click on the image below to read more Stephen Murphy is an author, an ecologist and a nurseryman. He has been a designer of natural landscapes for over 30 years. He loves the bush, supports Landcare and is a volunteer helping to conserve local reserves.
He continues to write about ecology, natural history and sustainable biorich landscape design. |