DESIGNING EDIBLE URBAN LANDSCAPES

 

McGregor Coxall’s Atlas Apartments in Victoria Park Sydney, completed in 2001, uses citrus trees and aloe vera within a private courtyard. Image courtesy of McGregor Coxall.

Food. It is the great unifier of place and race, the common ground sustaining our very existence. Why then, does food production feature so minimally in public space and urban design?

Under the weight of looming threats to energy, population and economy, the time is ripe to rethink our design focus.Traditionally, urban design has been dominated by the use of ornamental exotic and indigenous plants while edible species have been minimally utilised.

Now, as we move towards a potential crisis in food production it is more important than ever to rethink our design practices.  The past century’s unprecedented population explosion (four billion since 1950) has been carried on the back of cheap fossil fuels. Half of the world’s population currently survives on the extra calories produced from synthetic nitrogen, a by-product of natural gas with the additional unpleasant side effect of acidifying the soil.

Alarmingly, oil production peaked in 2006 according to economist Fatih Birol.

Add an unstable climate into the mix and we have a recipe for potential disaster for a food system reliant on stable and predictable climate patterns for yields, efficiency, and returns on investment.  Australia’s population is largely concentrated in urban centers, yet our agriculture takes place in the rural fringe – despite some of the best agricultural land existing within cities themselves (the Melbourne and Adelaide plains and the Sydney basin are three such examples).

Oxigen’s Weston Park masterplan at the head of Lake Burley Griffin in Canberra includes productive species in the design. Image courtesy of Oxigen.

Taylor Cullity Lethlean’s developed design for Victoria Square/Tarndanyangga in Adelaide proposes new forms of civic engagement not usually expected in the city centre. A key focus of this strategy is the productive garden that has focused on a combination of visual performance through high quality design detailing and striking productive species. Image courtesy of Taylor Cullity Lethlean.

In a predominantly infertile land like Australia, increased urban sprawl pushes food production further into less productive land. The ‘urban disconnect’ from food production also separates consumers from food practices.  Forty percent of Australia’s food is currently produced in the Murray Darling basin, which is under tremendous pressure due to water scarcity and politics surrounding mis-management.  Under the pressures of economic growth, our current industrial production of food relies heavily on chemical fertilisers and pesticides, while gross wastage occurs as produce fails to meet the cosmetic standard of retailers.

In 2004, Australia threw away $5.3 billion of food and 25-50% of fresh produce is still currently discarded for not meeting the generic size, weight and cosmetic demands of supply chains.

Dominated by a duopoly that controls around 80% of the retail market, the Australian food system’s resiliency in the face of environmental challenges is significantly compromised (not to mention the quality of the food itself through practices such as irradiation, cold storage, ethylene gas and biotechnological manipulation).  By repositioning agriculture into the urban sphere, we have the opportunity not only to reconnect with food production, but also to create and enjoy beautiful and uplifting spaces benefitting the health of the community at large.

 

McGregor Coxall’s Callan Park masterplan proposes a terraced productive garden as one facet of the project’s focus on local community health. Image courtesy of McGregor Coxall.

There are already significant movements in urban agriculture, such as community gardening, school and kitchen gardens, permaculture and guerrilla gardening.  These are usually relegated to neglected or private spaces and thus lack social visibility, remaining at the margins of public space.

There continues to be a significant proportion of the urban public domain that remains barren and inactivated.  If urban designers and landscape architects can incorporate edible species into their design paradigms, then formalised public spaces have the capacity to become blossoming centres of productive growth.

The aesthetic skills of the designer, combined with productive species such as fruit and nut trees, vines and climbers and vegetables and herbs, can create truly magical spaces of transcendent delight (and edible return).  Edible landscapes, if successfully realised, have the capacity to create environmental, social, economic and health benefits for the community at large, while also engaging ongoing community participation.

As with any shift in practice, there are undeniable challenges, including questions of plant knowledge, public liability, maintenance, risks of soil and air pollution and the requirements of low salinity irrigation water.  It is worth noting though, that all design practices have embodied risks and maintenance regimes. Exotic species, for example, typically require more watering, feeding, mowing, pruning and leaf collection (not to mention the legal risks of slip hazards from deciduous leaves), while native species need specific techniques such as pruning for regrowth and fire for seed dispersal.  It is a relatively simple task to add to this already rich bank of knowledge edible plant regimes of feeding, dusting, pruning and harvesting, while opportunistic members of the public are likely to take care of fruit yields thus mitigating concerns from slippage and falling fruit.

Fifth Creek Studio’s GP Plus Health Centre in Adelaide provides opportunities for participatory edible gardening on roof and vertical gardens. Image courtesy of Fifth Creek Studio.

Oxigen’s before and after shots explore productive and sustainable landscape hypothetical’s that include animals for prominent Adelaide sites. L-R: Torrens Riverbank precinct; Victoria Park, Adelaide Parklands; Pt Wakefield Road; Lochiel Park. Images courtesy of Oxigen.

Local government engagement will be essential to addressing planning, funding and legislative requirements. Positively, many local governments in Australia have already recently enabled establishment of community gardens within their jurisdiction.

There are already several precedents for the local use of edible species in public spaces. The 1854 design of Adelaide’s Victoria Square incorporated almond and olive trees. Energy Architecture’s Aldinga Arts Ecovillage uses edible species, McGregor Coxall’s Atlas Apartments in Victoria Park in Sydney contains orange trees and aloe vera, and Fifth Creek Studio’s ‘edible roof and vertical gardens’ feature in the GP Plus Health Care Centre in Marion, Adelaide.

In the design stages are the masterplan stage are Taylor Cullity Lethlean’s Victoria Square/Tarndanyangga; McGregor Coxall’s Callan Park; HASSELL’s Bowden Urban Village; WAX Design’s Jacob’s Creek Visitor Centre and Oxigen’s Weston Park. Currently under construction is VicUrban’s street tree orchards at ‘Meridian’ in Dandenong, Melbourne.

This is a positive signal that edible landscapes are becoming embedded into the core palette of designers of the public realm and give weight to a burgeoning new era for responsive and activated edible public space.

Joshua Zeunert

This entry was posted in Scribbles and Musings, The 'S' Word and tagged , , , , , , , , . Bookmark the permalink.

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