Posts regarding ‘Permaculture’

Building Fundamentals: Building “Green” Beyond the Home

April 22nd, 2010 by Clarke

This article by Clarke Snell was originally published in the New Life Journal.

If you think about it, the “green” in green building refers to plants. Our health and survival depends on the color green in the form of a vibrant plant committee with which we coexist. That’s why it’s surprising to me how often a “green building” project doesn’t include a focus on the area around the building, the place for interaction with plants and the rest of the natural world. This month I sat down with permaculture and edible landscaping expert Chuck Marsh to discuss how we can reconnect with the area around our houses.

I went to my first permaculture event, a design course in Texas, about 20 years ago. Since then, it seems that permaculture has gained almost mainstream status as a design system. Still, I don’t often see it defined. From your point of view, what is permaculture?

Permaculture is an ecological design system for the creation of regenerative human habitats. “Regenerative” is a key word here. Sustainability means “to hold up”, to maintain. I think we’ve reached a point where that’s not enough. We have a higher calling than to maintain what is. We now need to build up, to reweave the web of life, to restore abundance and diversity to the landscapes and spaces that we inhabit. So, while many people think that permaculture is a gardening system, it is in fact a complete ecological design approach to craft how humans inhabit landscapes whether built, planted, or natural.

As I look at houses, whether they’re in the city or the country, new construction or older in a historic neighborhood, I’m struck by how little the area around the building is actually used. Few people grow food anymore or craft outdoor space that allows them to spend productive time outside. Can permaculture help us connect again with the world outside our front doors?

Everything we build, plant, or just leave alone is an element of our landscape. A central goal of permaculture is to foster relationships so that the yields of one element meet the needs of another. We want to create interdependence.

The house, then, is one piece of a whole system. It has all kinds of companions. Driveways, pathways, gardens, existing habitats, outbuildings, etc. Let’s take a central tenet of green building: energy efficiency. If we consider only the house, we’ll add insulation and energy efficient appliances, then consider the job done. But if we see the house in relationship to the landscape, we can find many more opportunities to conserve. For example, we can place trees for cooling, either through redirecting wind, establishing natural vortexes of air movement, or creating shade. We can also introduce plantings to block winter winds, therefore preventing heat loss in the building.

These same plants can provide food and be a natural habitat, in other words they are multifunctional and therefore can be part of a complex interplay between elements. This multi-functionality is also central to permaculture. So, for example, in addition to being a lane of passage, pavement or pathway surfaces can be chosen to add heating or cooling to the area around a house. In combination with plantings, they can provide both. A bird bath or garden pool can be placed at the right angle in the right spot to bring light and passive solar energy into the house while adding color variation and the magic visual combination of light reflected from water. These are just examples of ways that multifunctional landscape elements can work together to simultaneously create food, thermal efficiency, natural habitat, visual beauty and many other positive effects on the livability of both the interior and exterior environment.

Of course, we used to do this. Nobody had lawns until the beginning of the 20th Century. Instead, people had what were called “door yards”. This was an outdoor space whose center was the kitchen door. It was swept, not vegetated, and was the space where clothes were washed, meals cooked, and beans shucked. Chickens were kept here and fed recycled food scraps in exchange for eggs. Today’s patios are a poor representation, a non-functional replica, of these yards. I think there’s a desire to move back in the direction of useable outdoor space. You see it in high-end outdoor kitchens being included in large custom homes. We can do the same thing and much more at the lower end of the budget scale too.

What can people do to start the process toward reengaging with the area around their houses?

The first step is to throw out the idea of a “maintenance free yard”. Maintenance has gotten a bad rap, but essentially it means “to care for”. Maintenance is love. We need to be creating landscapes that draw us outside, that pull us into interaction. We need to lure kids away from computer generated magical landscapes to the real magic of the sights, smells, sounds, feelings, and tastes of the changing seasons.

How can we trigger this reengagement? The best way is through our mouths. That’s how we discovered the world as toddlers. Therefore, we start with edible plants. We place them along paths and in front of doors, places where people will naturally pass by and take a taste. Next, we intermingle plants and other elements that have different colors, different textures. We create an environment that engages all the senses as it changes through the seasons.

Fundamentally, I see the house as a place for refuge, safety, and nurturing, not for all human activities.  We are fortunate to live in a climate in which we can live comfortably outside for seven months of the year. By seeing the house as a single element of a larger landscape, we can shift many activities outside. Why, for example, heat up the indoors in the summer by cooking when an outdoor kitchen is both more enjoyable and comfortable during those months? Remember, too, that useable outdoor spaces are much cheaper to build than their interior counterparts.

The bottom line is that we need to transform our conception of outdoor environments from eye candy viewed through picture windows to functional spaces in symbiotic relationship with interior spaces. The result will be more efficient buildings, a more enjoyable lifestyle, and a reconnection with our true home, the earth.

Sidebar: Tips from Chuck

  1. Don’t place your house on your favorite spot. Doing so turns the sacred into the vulgar or common.
  2. Place your house consciously in the microclimate. For example, when building on a hill, site the building mid-slope. Ridge tops are windy and cold and basins are frost pockets.
  3. Avoid north, northwest exposure. Winter winds create convective heat loss in buildings. If there is no existing natural barrier, place outbuildings or windbreaks to block these winds.
  4. Start at your kitchen door and work outward. Gardens needing the most care should be near the kitchen. Once you’ve managed these, move outward.
  5. Make enjoyment easy. Place berry bushes and small fruited plants along paths and driveways so that you’ll pass by and graze.

CHUCK MARSH is a permaculture and edible landscaping/ecological land use teacher, designer, and consultant.  He is the founder of Useful Plants Nursery and a co-founder of Earthaven Ecovillage, south of Black Mountain, NC, where he lives and grows.  He can be contacted by phone at 828.669.1759 or by email at marsh2246@bellsouth.net.

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Peak Phosphorus

January 16th, 2010 by Seldom

Believe it or not, peak phosphorus is probably our biggest global emergency.  I don’t know about you, but I don’t hear anyone talking about it.

The problem

Phosphorus is one of the most the important elements of life.  It is a major component of RNA, DNA, and ATP (the molecule produced by photosynthesis that carries energy to the other plant cells – which in turn provide us with energy).

Of the nutrients used as building blocks for life, the following elements all have gaseous phases at the temperatures and pressures found on the surface of the Earth and are therefore easily redistributed through the air:

  • Hydrogen
  • Oxygen
  • Carbon
  • Nitrogen
  • Sulfur

However, the following elements are solids or liquids and don’t move around so easily:

  • Phosphorus*
  • Sodium
  • Potasium
  • Calcium
  • …64 more

In a natural ecosystem or on a traditional small farm, plants take these molecules out of the soil and air to build themselves.  Animals eat the plants and use the same molecules to construct their bodies.  When the plants and animals die, microbes return the molecules to the soil.  Lather, rinse, repeat.

On the other hand, with our current industrial agriculture system the plants do their part and take in the molecules they’re supposed to, but then we ship them to a feedlot or city where they are consumed and decay far away from where they originated.  The molecules of the elements easily transported by air are replaced relatively easily, but the molecules of solid and liquid elements won’t make it back to the field they came from for a long, long time.

Phosphorus is more sensitive to this imbalance than the others because it is 10X more concentrated in the body than it is in the Earth’s crust.  None of the others are more concentrated in living beings like that.

To replace the missing phosphorus, we mine phosphate rock and sprinkle that on the soil for the plants to use as RNA, cell walls, etc.  This seemed like a great idea when we figured it out 170 years ago.  It continued seeming like a good idea all the way up until about 40 years ago when we started noticing the two big problems with this system:

Big Problem #1

Phosphorus that doesn’t get used is washed away by rain into rivers and eventually into the ocean.  Phytoplankton (algae) in the ocean are very happy with their newfound abundance.  They grow fat and reproduce prolifically.  The problem comes when they die.  As the algae is decaying, the bacteria breaking it down use too much of the oxygen dissolved in the water, killing everything else in that area.

La-Jolla-Red-Tide.780Algae bloom near La Jolla

Big Problem #2

We’ve already used half of the phosphate rock available.  According to a study by Patrick Dery peak phosphorus occurred in the US in 1988 and the rest of the world in 1989.  Others think we’re still 30 years away from the peak, but it doesn’t matter who’s right.  Either way, unless we change what we’re doing now, we will have depleted our supply of the central building block of life within a few hundred years of discovering it, and we do not know how to make more.

Peak_P_websiteChart from phosphorusfutures.net

Current uses of mined phosphate rock:

90% fertilizer.

5% animal feed supplements.

5% soft drinks, toothpaste, etc.

P_rock_price

phosphorusfutures.net

The Solution

Fortunately, the solution is easy.  We did it for our first 100,000 years, and we’re the only creatures not currently doing it.  The answer is eat, poo, and die in one place.

That doesn’t mean we all have to be farmers, but it does mean we need to be localvores and get over being sqweamish about the fact that we’re animals that are part of the web of life.

Plant food in your yard.  Buy the food you don’t grow from local farmers.  Insist on pasture raised meat.  Compost every organic material you can find.  Crap in a bucket.  When it’s time to die, have yourself planted in the ground without preservatives so that a tree can build itself out of the molecules you’ve been using.

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Healing Land Through Intensive Grazing

December 19th, 2009 by Seldom

Conventional wisdom says that overgrazing causes desertification of rangelands. Allan Savory says that’s dead wrong.

Plants have external digestive systems. We animals have microorganisms in our guts to break down food and make it useful to our cells, but plants don’t have that luxury. Their digestive bacteria and fungi live in the soil.

Savory divides the world into two areas:

Nonbrittle

In areas with a year-round high humidity, dead organism decay rapidly, and bare ground is quickly covered with vegetation. These areas cover about 1/3 of the planet’s land area.

Brittle

The other 2/3 of land area has prolonged dry seasons. During the dry season, plant matter dies, but the microorganisms that the plants need to digest that organic matter also die off. Instead of being digested, dead organic matter is standing. Since it doesn’t mulch the ground, the bare soil doesn’t retain moisture. New plants dry out before they get established.

In brittle environments, the bacteria in animal digestive tracks stays moist and alive during the dry season. Brittle environments require animals to build healthy soil. Before we humans screwed it up, massive buffalo herds in the US midwest would decimate the plant life in an area. However, at the same time they fertilized that area, and they moved on quickly allowing the plant life to recover. This cycle resulted in some of the thickest, richest top soil in the world in a semi-brittle environment.

Savory says overgrazing isn’t what’s turning brittle grass lands into deserts. A lack of animals is. In the US, the natural grazing animals are long gone, and for the most part our domesticated grazers don’t even live on the grasslands anymore. Our corporate industrial farming system has relegated grazing animals to hellish feed lots. Vast tracts of range land are left fallow, which most people would expect to be a good thing, but the plant life isn’t recovering. It’s digestive system is missing.

Smart land management in brittle environments mimics those natural buffalo herds and restores the land by intensely grazing it and moving the animals to new pastures often.

In this 1 hour presentation Savory goes into more detail and shows some convincing photographic evidence. He also argues that humans have been causing climate change because of this misunderstanding for a very long time.

For more information:

Savory’s website: 

Savory Institute

And his books:

Holistic Management Handbook:  Healthy Land, Healthy Profits, 2006

Holistic Management:  A New Framework for Decision Making, 1998

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Humanure: Goodbye, Toilets. Hello, Extreme Composting

December 12th, 2009 by brinker
(From Time Magazine)
By Adam Fisher Friday, Dec. 04, 2009

David Bailey helped install a composting toilet in Austin. Sawdust is used to eliminate odor.

For more than a decade, 57-year-old roofer and writer Joseph Jenkins has been advocating that we flush our toilets down the drain and put a bucket in the bathroom instead. When a bucket in one of his five bathrooms is full, he empties it in the compost pile in his backyard in rural Pennsylvania. Eventually he takes the resulting soil and spreads it over his vegetable garden as fertilizer.

“It’s an alternative sanitation system,” says Jenkins, “where there is no waste.” His 255-page Humanure Handbook: A Guide to Composting Human Manure is in its third edition and has been translated into five languages, but it has only recently begun to catch on. His message? Human manure, when properly managed, is odorless. His audience? Ecologically committed city dwellers who are looking to do more for the earth than just sort their trash or ride a bike to work. (See reusable toilet wipes as one of the top 10 odd environmental ideas.)

“It’s one of those life-changing books,” says Erik Knutzen, 44, an eco-blogger in Los Angeles. “You read it, and the lightbulb just goes on.” Now he eschews his porcelain potty for a big bucket with a toilet seat. He “flushes” by tossing in a scoop of sawdust, which not only neutralizes smells but also helps speed the breakdown of material for compost. Like many back-to-basics sophisticates, he believes Jenkins’ humanure system is more sanitary and more rational than the conventional alternative. “Human waste is a perfectly good source of an important resource, nitrogen,” Knutzen observes. “Water is a valuable resource too. Why mix the two and turn all of it into a problem?”

Wastewater treatment is much more energy-intensive than composting, which needs little more than time (about a year) for complete decomposition and pathogen elimination. In Austin, Texas, a sustainably minded nonprofit called the Rhizome Collective succeeded this year in getting the city to approve what may be the first legal composting toilet in the U.S. “The hypocrisy is amazing,” says Lauren Ross, 54, a civil engineer involved in Rhizome’s four-year battle to get a permit. “The city will buy you a low-flow toilet, but they’ll fight you all the way if you want to build one that uses no water at all.”

It’s an idea that you, dear reader, might be asked to take seriously. Not long ago, Nance Klehm, 44, a self-described radical ecologist in Chicago, invited her neighbors to stop using their toilets and start saving their poop. More than half of them — 22 of the 35 households — accepted her proposal. In three months she picked up 1,500 gal. (5,700 L) of excrement, which she’ll give back to participants this spring after she and Mother Nature have transformed it into a rich bag of fertilizer. “I’ve sent a sample in for a coliform test,” Klehm says. “There is zero detectable fecal bacteria.” (Read a brief history of toilets.)

At one point, Klehm invited her “nutrient loopers” to a potluck and was surprised to see who had agreed to participate. “It was the white collar people, not the ragtag anarchists. Mostly, they were delighted that they got this wacky proposal,” she says. “They didn’t know how to connect with the earth, but they could s___ in a bucket.”

Meanwhile, over in California, the Marin Composting Portable Odorless Outhouse Project, a.k.a. MCPOOP, is doing Klehm one better. The goal of MCPOOP (which is pronounced the Irish way as opposed to the rap-star way) is to get the government into the night-soil business and put humanure toilets in county parks and town squares. The group is less than a month old but already has the support of the local environmental establishment and Marin County supervisor Steve Kinsey. “The whole thing is like a good acid flashback,” says Kinsey. “We approved several experimental permits like this in the ’70s.” He estimates that a small-scale municipal demonstration project could be under way in less than a year. (Read “Is It Time to Kill Off the Flush Toilet?”)

MCPOOP was founded by a couple in their 50s. “We’re on a mission to re–potty train America!” says John Wick, a rancher in the western part of the county. “We’re going to start by replacing those nasty blue loos,” says his wife Peggy Rathmann, referring to two chemical toilets on their town’s main square. If that goes over well, they’ll replace the chemical toilets around Tomales Bay that kayakers often use. And then, who knows? Wick and Rathmann don’t see why every home in Marin County shouldn’t be humanure equipped.

To Joe (Mr. Humanure) Jenkins, nothing could be better news. “On a small scale, my system works like a dream,” he says. “But in order to do more research and development, I need to to collect humanure on a larger scale.”

MCPOOP and other projects are eager to help on the supply side. “We’re going to have plenty,” predicts Rathmann. “Tons of tourists come to West Marin, and they all leave us their poop!”

This is an expanded version of an article that originally appeared in the Dec. 14, 2009, issue of TIME

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Permaculture in a Nut Shell

December 12th, 2009 by brinker

Permaculture in a Nutshell

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Greening the Desert

December 12th, 2009 by brinker

Greening the Desert II: Greening the Middle East from Craig Mackintosh on Vimeo.

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Biochar From Waste Lumber

November 28th, 2009 by Seldom

We’re using our dimensional lumber scraps to sequester carbon and build topsoil. In this video Peter Hirst of New England Biochar shows how it’s done.

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Michael Pollan on Permaculture

August 1st, 2009 by Seldom

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Homegrown Revolution

March 9th, 2009 by brinker
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Composting Greenhouse

February 5th, 2009 by Seldom

This is the composting greenhouse built by the New Alchemy Institute in the early 80s.

Commercial greenhouses rely on fossil fuel heating rather than using passive solar design because they want as much light as possible for maximum growth rate. Blocking the north with insulation and mass results in a significant reduction. This design has the benefits of more light, but uses the compost process to provide the heat.

There are series of compost compartments along the north wall of this greenhouse accessible from outside. The compost provides CO2 for plant photosynthesis and helps heat the greenhouse. However, it also elevates the nitrogen level and the ammonia given off can burn the plant leaves. Therefore, they used small (40 watt) fans to blow the compost off-gasses thru 4″ perforated pipes and up thru the soil to use it as a biofilter. Bacteria in the soil turn the ammonia into nitrates which the plants then turn into amino acids.

The Composting Greenhouse at New Alchemy Institute

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