Growing Power-An Urban Agriculture and Education Center |
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| By Rob (Beo) in Eating Local, Education, Gardening, How To, Vermicomposting | November 30, 2007 | ||
A few friends of mine from the fledgling Sustainability NPO we recently founded, Sustain Jefferson , spent a few incredible hours touring Growing Power this past Monday. Growing Power is a non-profit Urban Agriculture and Education facility in Milwaukee, WI that claims to grow enough food for 2000 people on 2 acres. With a claim like that I was drawn like a moth to flame. Their website offered some clues to their system-vermiculture, aquaculture, and several greenhouses. The actual tour filled in many of the details and inspired me in a way that I haven’t experienced since I was originally introduced to Permaculture and Bill Mollison several years ago.

What excited me most about Permaculture was the sheer common sense of it all. Taking wastes and turning them into resources is not something we typically think of today. Just as Forests have no waste products, Permaculture strives to promote such perfect systems in human endeavors whether it be designing a garden or linking businesses together via Natural Capitalism. Using the waste of built systems to add energy to another allows you to drastically reduce your time and energy taking care of problems and reap the benefits of one integrated system working in concert is something that continues to fascinate me Aquaponics, especially in the uber simple system that Will Allen of Growing Power sets up, fits the bill perfectly. 
Aquaponics takes the aqua from aquaculture and ponics from hydroponics and melds them with a healthy dose of applied Permaculture. Aquaculture is the farming of fish in indoors in recirculating water tanks. The single largest waste from this system is that housing thousands of fish in a closed system fouls the water right quick. Hydroponics is a system of growing plants in a nutrient water medium, which of course begs the question of where the nutrients come from. Aquaculture attempts to solve these problems with an elegant solution by routing the waste water from the aquaculture tanks through a hydroponic system to provide the nutrients for the plants, which help to clean the water and significantly reduces the filtration needed before the water is returned to the fish. Even at this level I love the idea. Growing Power puts this system into hyperdrive.
What Will Allen and some others are doing is experimenting with what is considered by most to already be an experimental way of raising fish and plants. First off Will has completely done away with the filtration system. He has also done away with any commercial feed, preferring instead to grow his own. See the underlying foundation of Growing Power is worms.
Vermiculture is the practice of raising worms as a means to reduce, even recycle, waste and turn out some freaky good fertilizer. Red composting worms will eat their weight in organic waste (anything from pasta leftovers to cardboard to animal manure) and then poop out “castings” that are quite possibly the best organic fertilizer available. Growing Power does
this on an almost industrial scale-using hundreds of bins (pictured) to process literally 10′s of thousands of pounds of waste from local restaurants into rich worm castings-saving the restaurants thousands of dollars in garbage removal fees, and providing Growing Power with the raw material to produce tons and tons of food. Brilliant!
The other great thing that worms do is, um, breed. In fact, in perfect conditions composting worms will double in population every 6 weeks. Growing Power uses the immense amount of castings to provide the growing medium for their greenhouse operations and then uses the surplus worms as a significant portion of the feed for the thousands of Tilapia in the aquaculture tanks.
Back to the filtration method. Growing Power uses plants, specifically water cress, to filter the water. As with most of the systems at the site, it is simple and uses mostly reused items that are common in an urban environment. In this case reclaimed sump pumps take water from the bottom of the 5′ deep tanks to 30′ long flats of cress. The flats are very slightly sloped, so only gravity is needed to move the water slowly through the pea gravel bed that serves to anchor the water cress roots. The water cress removes quite a bit of the excess nitrogen and other “wastes” from the water, but much of the work is done by nitrifying bacteria that lives in the pea gravel and on the plant roots. Between the bacteria and the plants the water is cleaned of virtually all of the excess waste. Will Allen was not real long as specifics when asked about ratios of cress to Tilapia, he is an instinctive innovator… he just knows it works. Several PhD types have also toured the facility and are adamant that the system should not work. Yet, Will adds with one of his huge grins-he has been doing it for 3 years and has only lost one fish. Time to rewrite the textbooks!

So what gives? Will Allen (the giant in the blue sweatshirt above) is convinced that the few handfuls of worm castings he adds to the cress flats are the difference. The castings are chock full of rich living bacteria and fungus cultures, and it is these that Will believes supercharges the cress flats with filtering capability. After seeing the vibrance and life of his greenhouses, the obvious health of his fish, and the numerous innovations that seemingly turn up at every corner-I believe him. What Growing Power is doing is preforming a simple modeling of a natural system (a watershed) and tweaking it to produce resources more applicable to human society.
This mingling of Permaculture and Sustainable Agriculture is fascinating, but Will Allen and Growing Power are not merely working to perfect experimental growing systems. Their true goal is to provide sustainable, local food to the people that need it most and have the least access to it-the urban poor. Growing Power grows tilapia and watercress in their aquaponic system, but in most of his greenhouses before the water gets to the watercress it irrigated thousands of sq. feet of nutritious greens that are housed in pots full of worm castings. These plants are incredibly lush and vibrant-without the input of any additional fertilizer. By using “waste” products at every turn Growing Power is able to drastically cut costs which allows them to survive in an urban setting with its high property values, and provide healthy sustainable food to thousands in an urban environment. In all Growing Power provides employment for over 30 people and gives meaning to hundreds more by offering educational workshops and volunteering opportunities at the farm. On site, Growing Power also raises row crops, chickens, and dairy goats giving many urban children (and adults!) a rare glimpse of where food comes from and the chance to pet a goat or hear a chicken cluck and feel a still warm egg.
Will Allen takes this even further and travels Africa and Central Asia teaching others about his growing systems. To that end, much of his current design work is focused on replicability and cost cutting. Will’s newest aquaculture houses are built in simple plastic hoop houses with the fish tanks buried in the ground to increase insulation and allow the use of inexpensive pond liner vs. stand alone tanks in an attempt to cut costs and reduce energy inputs. The last greenhouse system he took us through was built for $5000 plus labor, and it houses 3000 tilapia and 1500 Lake Perch in addition to 300 sq. ft of water cress and several hundred pots of greens and vegetables that were basking in the warm humid air. The next biggest problem to overcome is how to make it Peak Proof by removing the dependence on the second hand natural gas pool heater he is using. It will certainly add significantly to the start-up costs, but a renewables based system using simple materials is in the works. At his current site, Will is also working with some partners on an experimental methane digester sized to be useful on a municipal level. Seemingly every turn on the tour had another incredibly innovative idea pushing the envelope of sustainability be it heating greenhouses with compost piles or retrofitting broken clothes dryers to be reborn as soil sifters.
It was truly inspiring to see people in the heart of some of the poorer parts of Milwaukee making a difference, growing sustainable and nutritious food, and spreading the word about simple common sense systems that work.
Today is one of my favorite days of the year. The Autumnal Equinox is particularly special, even holy, to us. I am not an overly spiritual person, but September/October are fabulous times-the harvest is still in full swing-my sunchokes are cresting 8′-and while there is a nip in the air during my 5am commute I can still pick tomatoes and peppers. It is a beautiful, magical time.
Being Eco Aware in a Fortune 500 company can be interesting. Some of it is great-everyone wants a test drive in your hybrid, but it can also get weird when they want to feel the texture of your organic hemp shirt. Last week in a lull during a meeting in a peer’s office while he took another call I filled the gap by sketching a rough diagram of The Funnel on his dry erase board and as he finished his call I proceeded to regale him with a 90 second version of my deep concern about the results of our current rampant consumerism and its effect on the population limits of our Earth mixing in various elements of ideas such as ecological footprint, Peak Oil, the effects of the melting of the Himalayan glaciers on water availability in India and China, etc. to such an extent that the overall effect was to stun my peer into silence. The Green Bug rears its head at odd times.
Buy Less: After talking so much about the rampant energy consumption, pollution and water shortages in China and India I feel strongly that exporting our pollution and resource use is an immoral act. It takes a lot of energy and water to make a Mattel Hot Wheel in China while at the same time pushing uncontrolled urbanization that is further eroding that region’s ability to feed itself. We cannot be sustainable until we learn to more live frugally. Cutting consumption impacts everything. It cuts environmental degradation from resource appropriation, cuts energy consumption and industrial pollution from unregulated manufacturing, and frees up money for more sustainable practices.
Buy Local: If we are to survive post Peak Oil and remain flexible enough to roll with the punches of our new self made climate we need to recreate village/regional economies. There is more patriotism to Buying American than in keeping Harley afloat. Here in Wisconsin it isn’t always easy to find local foods and goods year round, but by purchasing as close to home as possible we drive a local economy that encourages artisan skills that will be essential as we are forced to switch from a resource intensive economy and revert to a more knowledge based one. Factor in the massive resource and pollution savings of cutting several thousand miles of transportation off your goods and it’s a no brainer.
Conserve Energy: This is usually where I start my Eco Evangelism. I have even made inroads with some die hard neo cons… energy is expensive and even if you don’t believe in Peak Oil or Climate Change, money is a powerful persuader. I figure we are saving $6-8k annually compared to where we were before going green. On a more sustainable level, due to the massive energy losses in transmission lines for electricity or in shipping oil half way around the globe, cutting energy use at the source pays back immense dividends in resource and pollution savings. Hybrids, CFL’s, programmable thermostats, caulking, etc can have incredible effects. Kick it out another level and factor in the built environment with LEED standards, New Urbanism development, and efficient mass transit and hope becomes a reality. We need that energy to invest in a different production infrastructure and may only have a generation to do it.
Buy Organic: I rarely push the health benefits of buying organic. The science can be divisive and no one wants to think they have been slowing poisoning themselves or their children so it throws up walls for them. Instead I push the undeniable environmental consequences of our current industrial agriculture. We are losing our topsoil to the wind while we poison our groundwater–two resources that we literally cannot live without. Almost more terrifying to me is that with the passing of the current generation of farmers (mean age of over 55) we will be losing untold generations worth of accumulated oral traditions of “organic” farming. Our grandparents learned from their fathers before them how to farm successfully without petroleum. Their children switched to a more industrial model and the majority of young farmers today have never farmed any other way. Anyone who has ever tried to start a garden knows that nature is a firm taskmistress and does not brook mistakes-and even Eliot Coleman can only teach you so much from a book. We need that knowledge to be passed on as it always has-through experience: how to hold a hoe, when to plant in your county, and with those skills to have the seeds that have been painstakingly saved for generations to thrive in that exact farm.
Recent intellectual stints into the Big Picture of Sustainability trying to place thoughts within the current destructive economic and industrial paradigms had me searching for some additional perspectives on the matter. Luckily a quick Amazon search led to me to this incredibly useful little book that details the history of Sustainability over the past 200 years focusing most intently on the past 20 years as momentum picked up. Of interest to many readers will be the incredibly detailed Resource Section that includes 28 pages of Organizations, followed by a 15 page annotated bibliography. A true Who’s Who of Sustainability today that is a great launching point for additional study.
The fact that biomass energy production is getting half page coverage in the business section of the
Spied on page 3 of Michael Phillps 


Our municipality is currently undergoing the initial phases of a installing a new kind of utility-for runoff. These 
o to help us assuage that guilt, we attacked our .5 acres with the explicit intent to live as lightly as we can. A big factor in that has been my growing interest in Permaculture and site design. When we moved in we had a blank slate-literally no lawn at all. We had neither the time, nor money to go completely lawn free, and the HOA wouldn’t let us plant prairie everywhere. But we blocked out a full third of the yard for perennial and vegetable beds, installed a rain garden, 4 rain barrels, and in total planted 13 trees that first year. By the second year the perennials were coming in strong and we began to notice that when talking with other members of our community about where we lived, they invariably commented “oh, the house with beautiful gardens!” With Eco Mama’s eye for color and form, and my insatiable need to dig and plant we had discovered a talent to create sustainable, beautiful, and low impact gardens. The seed for
financial goals of the business will be to offset any tools needed (such as our new small trailer), and to perhaps offset the moderate yearly expenses of my own gardens. A good example is the rain barrels that we offer. They are constructed in our garage from Oak Whiskey barrels that I source from a local brewery. Because I am using what is essentially a manufacturing waste product, I get them cheap. Oak Rain Barrels typically sell for $175 or more. Mine are $60. Not counting the time it takes to pick them up (about 7 miles away) I can make 2-3 an hour. So I can keep up with demand and only work an hour or so a week, and still make about $30/hr doing something I love.
business is not very labor or supply intensive limiting my larger impact, but I have already approached several community members as “subcontractors” who have heavy equipment I will need such as seed drills for prairie installs, or skid steers for no-mow lawn installations. More interconnected Cottage Businesses help keep the wheels of a local economy rolling. A cottage business that makes artisan breads may keep a local health food store in business thru purchasing ingredients from them; an idyllic example could be home spinners sourcing fiber from local small farms, selling to other small weavers to produce clothes to be sold in a local shop. Of course, this is how a huge portion of the American economy used to work before cheap energy changed the playing field. Better yet, many cottage business transactions need not involve the exchange of money at all-bartering is viable at this scale. My last rain barrel was traded for organic flour, peanut butter, and eggs with a small local organic grocer.
your home by professionals and pay a nominal monthly fee based on your usage with no initial outlay. Tempted? The 
