Here at PGS we really try to balance our product lines with an abundance of organic and sustainable products, from organic nutrients to sustainably harvested coco and soil products. The art and science of Permaculture has always inspired us and we pay tribute however we can. On this rainy and windy Wednesday we thought it would be nice to share some background on Permaculture with you. Thanks to wikipedia for providing the following information.
Mollison and Holmgren
In the mid 1970s, Australians Bill Mollison and David Holmgren started to develop ideas about stable agricultural systems. This was a result of rapid growth of destructive industrial-agricultural methods. They saw that these methods were poisoning the land and water, reducing biodiversity, and removing billions of tons of topsoil from previously fertile landscapes. They announced their permaculture” approach with the publication of Permaculture One in 1978.
The term permaculture initially meant “permanent agriculture” but was quickly expanded to also stand for “permanent culture” as it was seen that social aspects were integral to a truly sustainable system.
Observation develops design—Termite mounds inspire biomimicry for passive climate control in modern housing
After Permaculture One, Mollison and Holmgren further refined and developed their ideas by designing hundreds of permaculture sites and organizing this information into more detailed books. Mollison lectured in over 80 countries and taught his two-week Design Course to many hundreds of students. By the early 1980s, the concept had broadened from agricultural systems design towards complete, sustainable human habitats.
By the mid 1980s, many of the students had become successful practitioners and had themselves begun teaching the techniques they had learned. In a short period of time permaculture groups, projects, associations, and institutes were established in over one hundred countries. In 1991 a four-part Television documentary by ABC productions called “The Global Gardener” showed permaculture applied to a range of worldwide situations, bringing the concept to a much broader public. Excerpts are available online through YouTube.
Further developments
Permaculture has developed from its Australian origins into an international movement. English permaculture teacher Patrick Whitefield, author of The Earth Care Manual and Permaculture in a Nutshell, suggests that there are now two strands of permaculture: Original and Design permaculture.
Original permaculture attempts to closely replicate nature by developing edible ecosystems which closely resemble their wild counterparts.
Design permaculture takes the working connections at use in an ecosystem and uses them as its basis. The end result may not look as natural as a forest garden, but still respects ecological principles. Through close observation of natural energies and flow patterns efficient design systems can be developed. This has become known as Natural Systems Design. (Dr. M Millington and A Sampson-Kelly)
Elements of design
Permaculture principles draw heavily on the practical application of ecological theory to analyze the characteristics and potential relationships between design elements.
Each element of a design is carefully analyzed in terms of its needs, outputs, and properties. For example chickens need water, moderated microclimate and food, producing meat, eggs, feathers and manure and can help break up soil hardpan.
Design elements are then assembled in relation to one another so that the products of one element feed the needs of adjacent elements. Synergy between design elements is achieved while minimizing waste and the demand for human labor or energy. Exemplary permaculture designs evolve over time, and can become extremely complex mosaics of conventional and inventive cultural systems that produce a high density of food and materials with minimal input.
While techniques and cultural systems are freely borrowed from organic agriculture, sustainable forestry, horticulture, agroforestry, and the land management systems of indigenous peoples, permaculture’s fundamental contribution to the field of ecological design is the development of a concise set of broadly applicable organizing principles that can be transferred through a brief intensive training.
Modern permaculture
Modern permaculture is a system design tool. It is a way of:
- looking at a whole system or problem;
- observing how the parts relate;
- planning to mend sick systems by applying ideas learned from long-term sustainable working systems;
- seeing connections between key parts.
In permaculture, practitioners learn from the working systems of nature to plan to fix the damaged landscapes of human agricultural and city systems. This thinking applies to the design of a kitchen tool as easily to the re-design of a farm.
Permaculture practitioners apply it to everything deemed necessary to build a sustainable future. Commonly, “Initiatives … tend to evolve from strategies that focus on efficiency (for example, more accurate and controlled uses of inputs and minimization of waste) to substitution (for example, from more to less disruptive interventions, such as from biocides to more specific biological controls and other more benign alternatives) to redesign (fundamental changes in the design and management of the operation) (Hill & MacRae 1995, Hill et al. 1999).” “Permaculture is about helping people make redesign choices: setting new goals and a shift in thinking that affects not only their home but their actions in the workplace, borrowings and investments” (A Sampson-Kelly and Michel Fanton 1991). Examples include the design and employment of complex transport solutions, optimum use of natural resources such as sunlight, and “radical design of information-rich, multi-storey polyculture systems” (Mollison & Slay 1991).
“This progression generally involves a shift in the nature of one’s dependence — from relying primarily on universal, purchased, imported, technology-based interventions to more specific locally available knowledge and skill-based ones. This usually eventually also involves fundamental shifts in world-views, senses of meaning, and associated lifestyles (Hill 1991).” “My experience is that although efficiency and substitution initiatives can make significant contributions to sustainability over the short term, much greater longer-term improvements can only be achieved by redesign strategies; and, furthermore, that steps need to be taken at the outset to ensure that efficiency and substitution strategies can serve as stepping stones and not barriers to redesign…” (Hill 2000)
Core values
Permaculture on an organic farm on the Swabian Mountains in Germany.
Permaculture is a broad-based and holistic approach that has many applications to all aspects of life. At the heart of permaculture design and practice is a fundamental set of ‘core values’ or ethics which remain constant whatever a person’s situation, whether they are creating systems for town planning or trade; whether the land they care for is only a windowbox or an entire forest. These ‘ethics’ are often summarized as;
- Earthcare – recognising that Earth is the source of all life (and is possibly itself a living entity — see Gaia theory), that Earth is our valuable home, and that we are a part of Earth, not apart from it.
- Peoplecare – supporting and helping each other to change to ways of living that do not harm ourselves or the planet, and to develop healthy societies.
- Fairshare (or placing limits on consumption) – ensuring that Earth’s limited resources are used in ways that are equitable and wise.
Modern thought about permaculture began with the issue of sustainable food production. It started with the belief that for people to feed themselves sustainably, they need to move away from reliance on industrialized agriculture. Where industrial farms use technology powered by fossil fuels (such as gasoline, diesel and natural gas), and each farm specializes in producing high yields of a single crop, permaculture stresses the value of low inputs and diverse crops. The model for this was an abundance of small-scale market and home gardens for food production, and a main issue was food miles.
Design innovation
The core of permaculture has always been in supplying a design toolkit for human habitation. This toolkit helps the designer to model a final design based on an observation of how ecosystems interact. A simple example of this is how the Sun interacts with a plant by providing it with energy to grow. This plant may then be pollinated by bees or eaten by deer. These may disperse seed to allow other plants to grow into tall trees and provide shelter to these creatures from the wind. The bees may provide food for birds and the trees provide roosting for them. The tree’s leaves fall and rot, providing food for small insects and fungus. Such a web of intricate connections allows a diverse population of plant life and animals to survive by giving them food and shelter. One of the innovations of permaculture design was to appreciate the efficiency and productivity of natural ecosystems, to use natural energies (wind, gravity, solar, fire, wave and more) and seek to apply this to the way human needs for food and shelter are met. One of the most notable proponents of this design system has been David Holmgren, who based much of his permaculture innovation on zone analysis.
OBREDIM design methodology
OBREDIM is an acronym for observation, boundaries, resources, evaluation, design, implementation and maintenance.
- Observation allows you first to see how the site functions within itself, to gain an understanding of its initial relationships. Some recommend a year-long observation of a site before anything is planted. During this period all factors, such as lay of the land, natural flora and so forth, can be brought into the design. A year allows the site to be observed through all seasons, although it must be realized that, particularly in temperate climates, there can be substantial variations between years.
- Boundaries refer to physical ones as well as to those neighbors might place, for example.
- Resources include the people involved, funding, as well as what can be grown or produced in the future.
- Evaluation of the first three will then allow one to prepare for the next three. This is a careful phase of taking stock of what is at hand to work with.
- Design is a creative and intensive process, and must stretch the ability to see possible future synergetic relationships.
- Implementation is literally the ground-breaking part of the process when digging and shaping of the site occurs.
- Maintenance is then required to keep the site at a healthy optimum, making minor adjustments as necessary. Good design will preclude the need for any major adjustment.

















Parts List
Step 1: Trace the outline of your container onto the styrofoam sheet.
Step 2: Measure the distance between the outer edge of your container and the inner wall (measurement ‘X’).
Step 3: Be sure to cut the styrofoam ‘X’ inches smaller than your outline so that it fits neatly inside the container. After a little bit of additional trimming, you should have a perfect fitting “raft” as shown on the left. Make sure the styrofoam raft can move freely up and down inside the reservoir with it full of water since the pressure may deform it a bit. If this is the case, simply trim away until you can get 4-8” of up and down movement. This is very important for this system to work properly.
Step 4: Layout the grow sites on your styrofoam raft and use a hole saw to cut them out. If you don’t have access to a hole saw, you may be able to use a utility razor to perform the same task albeit more challenging!
Step 5: Mark off the lowest point your raft will reach inside the container (due to the wall taper or internal obstruction) so that you’ll know when to top it off in order to prevent the nutrient level from dropping away from the bottom of the raft and leaving your plants high and dry.
Step 6: Drill a 3/8” hole in the bottom wall of your container and insert the 1/4” rubber compression grommet. Pass your air tubing through the grommet and attach to your air stone. REMEMBER! You must mount your air pump higher than the maximum water level in your container to prevent back flow of nutrient solution through the air tubing and into the pump.
Step 7: Time to plant your favorite seeds! I used scissors to trim the bottoms off the Perfect Start #2s since they were just a bit too long for the little 2” cups I used here.
Use LECA stones to back fill around the seeded plugs and place them into each of the grow sites in your raft.

















Figure one: Water heaters (left) are useful for heating nutrient in winter. In summer, ‘water-chillers’ (right are effective for cooling. These items can be thermostically controlled.
Figure two: Root browning is a typical symptom of the root diesase ‘pythium’.
Figure three: A ‘raised’ lid permits airflow within the reservoir whilst still preventing light and dirt ingress and evaporation. Airflow helps prevent stale air and fungus/moulds.
Figure four: Air stones are a reliable method of ensuring oxygen levels are adequate.




PGA Blog Readers Comments