Permaculture is often misunderstood as simply a means to grow vegetables organically. It indeed has roots in agriculture but it is far more than that. Permaculture is a design science that can be applied to all human settlements. Whether this is an urban home or a farm the, fundamental principles are the same. We look to patterns and resilient features found in natural eco-systems as inspiration for how we design systems, whether they be systems for growing food or systems for humans to live in or even communities and organisations.

permaculture (pûrˈmə-kŭlˌchər) (n.): Permaculture principles focus on thoughtful designs for small-scale intensive systems which are labor efficient and which use biological resources instead of fossil fuels. Designs stress ecological connections and closed energy and material loops. The core of permaculture is design and the working relationships and connections between all things.
- Bill Mollison

In Permaculture, there are three core ethics – care for the earth, care for the people and reinvest the surplus. It is these fundamental tenants that underpin everything we do. 

How can we design systems that mutually beneficial for both humans and whatever ecosystem they find themselves in?

For instance. In nature, we observe that nothing is wasted. Can we design homes that use greywater to grow food and sewerage and organic waste to make cooking gas and fertilizer?

Can we view the home as a resource generator rather than a resource demand centre? Whether the resource be water, energy or food?

History

Permaculture was started by Bill Mollison and David Holmgren in 1978. The term permaculture initially referred to "permanent agriculture", later it was extended to "permanent culture", as it became clear that humans (culture) were indeed critical to (and part of) any truly sustainable system.

Permaculture Ethics

Care for the earth

Provision for all life systems to continue and multiply. This is the first principle, because without a healthy earth, humans cannot flourish.

Care for the people

Provision for people to access those resources necessary for their existence

Fair share

By governing our own needs, we can set resources aside to further the above principles.[19] This includes returning waste back into the system to recycle into usefulness.[20] The third ethic is referred to as Fair Share, which reflects that each of us should take no more than what we need before we reinvest the surplus.

Twelve Permaculture Design Principles

As articulated by David Holmgren in his Permaculture: Principles and Pathways Beyond Sustainability:

Observe and interact

By taking time to engage with nature we can design solutions that suit our particular situation.

Catch and store energy

By developing systems that collect resources at peak abundance, we can use them in times of need.

Obtain a yield

Ensure that you are getting truly useful rewards as part of the work that you are doing.

Apply self-regulation and accept feedback

We need to discourage inappropriate activity to ensure that systems can continue to function well.

Use and value renewable resources and services

Make the best use of nature's abundance to reduce our consumptive behavior and dependence on non-renewable resources.

Produce no waste

By valuing and making use of all the resources that are available to us, nothing goes to waste.

Design from patterns to details

By stepping back, we can observe patterns in nature and society. These can form the backbone of our designs, with the details filled in as we go.

Integrate rather than segregate

By putting the right things in the right place, relationships develop between those things and they work together to support each other.

Use small and slow solutions

Small and slow systems are easier to maintain than big ones, making better use of local resources and producing more sustainable outcomes.

Use and value diversity

Diversity reduces vulnerability to a variety of threats and takes advantage of the unique nature of the environment in which it resides.

Use edges and value the marginal

The interface between things is where the most interesting events take place. These are often the most valuable, diverse and productive elements in the system.

Creatively use and respond to change

We can have a positive impact on inevitable change by carefully observing, and then intervening at the right time.