Sustainable landscaping isnt about mowers that burn liquid propane, efficient irrigation systems, compost teas, or even native plants. While all of these efforts, and others like them, are steps along a continuum moving towards sustainability, they will all ultimately fall short of the goal of real sustainability. Sustainability is not a superficial strategy that can be implemented by taking a few small steps. Sustainability is a complex web of interactions that reflect the ability of man and nature to coexist in harmony.
True sustainability is a zero sum game. This is the truth with all functional (sustainable) systems (ecosystems). Inputs must balance outputs. One could say the quantity of resources invested in a landscape (cost) can be balanced against what we get out of it (benefit). Too frequently the modern landscape defines cost and benefit too narrowly. Money is the predominant metric the landscape is measured by. Sustainable landscapes take an expansive view of cost/benefit terms. The desired attributes of a landscape force us to look more broadly at the landscape. When we ask for more from our landscape is when sustainability really begins to meet our needs.
Sustainable landscapes must be aesthetically pleasing, supportive of organizational objectives, environmentally compatible, financially feasible, horticulturally achievable, and self-perpetuating to the greatest extent possible. Blending these aspirations is challenging for the landscape. Pursuing one or two of these at a time is difficult enough, but to create a sustainable landscaping matrix these objectives must all be pursued equally. Diversity of landscaping goals provides resiliency. If any one area is struggling, the other benefits carry the load until all facets recover. This is a hallmark of sustainability.
Sustainable landscapes come in many forms but must fit the organization's image
Sustainable landscaping is about a systems change, not about implementing a particular policy or landscaping process. Sustainable landscapes are not "wild" but parts of them may appear that way. Why is there resistance to a landscape that moves in a new design direction? Our current landscape paradigm is not etched in stone. What is in vogue at one time may be out of favor soon enough. The sustainable landscape responds to determinant conditions appropriately. Natural factors like geology, indigenous plants/animals/insects, climate, must mesh with non-natural factors such as organizational purpose, financial investment, image, municipal codes, etc. The typical modern landscape does not respond to all of these factors.
DU President's House: Sustainable landscapes do not have to look "wild" or "weedy"
I want to stress that I do not equate sustainable with "out-of-control". I also do not only equate sustainable with "natural". These mistaken concepts of sustainable landscaping are some of the reasons true sustainability isnt more common. Landscaping is inherently based in living organisms where the consequences of life, pro and con, are sometimes chaotic. Sustainable landscaping uses a deliberate planning methodology to respond to that chaos. The sustainable landscape is in synchronicity with the complex factors listed earlier to the fullest extent. The landscape must be conceived, installed, and maintained in cooperation with organizational and ecosystem needs. Sustainable landscaping reconciles the diverse needs of man and nature, cost and benefit, in a broadly functional creation.