Archive for Organic Gardening

Growing Food Locally: Integrating Agriculture Into the Built Environment (PART 2)

Permaculture landscaping

Conventional practice in commercial development of all types is to install generic shrubs and shade trees in a sterile landscape of mounded mulch and turf. One can walk out of almost any office building, school, hotel, or restaurant coast-to-coast, and see the same landscape. Why not devote some of that landscaping cost and effort to trees and shrubs that bear fruit? This is one of the ideas of permaculture, a landscaping practice (the word derived from “permanent” and “agriculture”) pioneered by Bill Mollison of Australia.

While there are plenty of examples of homeowners replacing their lawns with edible landscapes (and a number of excellent books on this topic), EBN was—remarkably—unable to find any examples of commercial buildings whose owners implemented an edible landscaping strategy. Why can’t employees at a Florida office complex go outside for a mid-afternoon stroll and pick a ripe orange from a well-managed landscape of dwarf citrus trees? Why can’t schoolchildren and teachers in Yakima, Washington, pick cherries, raspberries, and apples during recess? Wouldn’t this be the “low-hanging fruit” of a transition to more localized food production?

Farming Our Rooftops

For an article in 1998 on low-slope roofing (see EBN Vol. 7, No. 10), we calculated that the nation’s 4.8 million commercial buildings had about 1,400 square miles (360,000 ha) of roof, most of which is nearly flat—this is an area larger than the state of Rhode Island. While lots of these roofs are shaded by neighboring buildings, are structurally inadequate to support rooftop activity, or are otherwise inappropriate for use, there are lots of buildings where rooftop gardens or greenhouses could very effectively be used for food production.

Green roofs and container farming

Most green roofs today are created to manage stormwater flows, to reduce the urban heat island effect, to save energy, or to create attractive green spaces. Green roofs can also provide “farmland.”

Portland, Oregon, has been a leader in advancing green roofs (eco-roofs, as they are called locally), so it’s no surprise that some examples of food-producing green roofs can be found there. One of them is the Burnside Rocket building, a new mixed-use green building in the Lower Burnside neighborhood of the city. On the roof, Marc Boucher-Colbert manages about 1,000 ft2 (100 m2) of garden space. Included in this growing space are two small sections of intensive green roof ( intensive green roofs have deeper soil than the more common, extensive green roofs—which are typically planted with sedums), six 3′ x 9′ (0.9 x 2.7 m) raised beds, and 39 circular plastic planters made from “kiddie” pools, each about four feet (1.2 m) in diameter. For two years, Boucher-Colbert has been growing a variety of produce for the Rocket Restaurant located on the first floor of the building. (Unfortunately, the restaurant closed in late 2008.)

Boucher-Colbert uses a variety of soil amendments for his organically managed gardens, including kelp meal, glacial rock dust, bone meal, blood, worm casings, and commercially available organic fertilizer. His soil depths vary from about 3″ (80 mm) for the round planter beds to 18″ (460 mm) in the raised beds. When necessary, he waters beds with a solution including a fish-emulsion and kelp organic fertilizer. His goal is year-round food production, offering chefs a variety of healthy, fresh, seasonally appropriate produce. Along with a variety of herbs, Boucher-Colbert has produced lettuce, arugula, tomatoes, peppers, eggplant, summer squash, cucumbers, and various specialty vegetables, such as golden-podded peas.

Using green roofs for food production is not without challenges. Along with the structural loading issues (Boucher-Colbert cautions that one should not follow his example without a thorough inspection by a structural engineer), easy access to the roof is critical. In a multifamily residential or commercial building, occupants may not want urban farmers traipsing with wheelbarrows of fertilizer and muddy tools through a public lobby.

Rooftop greenhouses with soil

Eli Zabar’s greenhouse operation in the Upper East Side of Manhattan illustrates the potential for integrating commercial-scale food production onto rooftops. Significantly more food can be produced over a much longer growing season in rooftop greenhouse operations than with open-air green roofs and container gardens. Zabar’s idea for the greenhouses emerged around 1995 from two of his interests. He wanted to stretch the season during which he could sell fresh, local tomatoes, and he wanted to use the waste heat from a bakery he operates. “When I put the two ideas together, the light bulb went off,” Zabar told EBN. He currently manages four greenhouses, the largest 40′ x 100′ (12 x 30 m), with a full-time greenhouse staff of two.

Since he built the first of his rooftop greenhouses, Zabar has always grown in soil. While he has visited lots of successful hydroponic greenhouse operations, he believes that produce grown in soil tastes better. “I’m not interested in hydroponics,” he said. With soil-based growing, he’s also able to make use of compost that he produces on the roof using discards from his market. He has an eight-foot (2.4 m) diameter drum with an auger that is turned regularly to mix the compost. His recipe for compost includes sawdust and bread from his bakery (which supplies about 1,000 restaurants in the city). Zabar would like to compost more of his organic waste but can’t. “We could do a ton more, but there’s a space limitation,” he said.

Ducts from his bakery ovens heat the rooftop greenhouses, providing all of the needed heat for his lettuces and herbs. For tomatoes, he has to supplement that heat to maintain an optimal temperature of 75°F (24°C).

Rooftop hydroponic greenhouses

While Eli Zabar is a strong proponent of soil-based growing, much of the recent interest in rooftop greenhouses has focused on hydroponics, which involves growing plants in nutrient-rich water. This method offers a number of distinct advantages in rooftop applications.

Benjamin Linsley of BrightFarm Systems in New York City (www.brightfarmsystems.com) consults on rooftop greenhouses and claims that hydroponic management is 10–20 times more productive than field agriculture, with far lower water use and higher reliability. After developing the “Science Barge,” a demonstration project with a floating farming component that operated along the Manhattan waterfront in the summers of 2007 and 2008, he shifted his attention to rooftop hydroponic greenhouses. BrightFarm Systems has several hydroponic rooftop greenhouse projects in the queue for construction during the first half of 2009, he told EBN, and another 15 projects that stand a good chance of moving forward before the end of 2010.

There are three basic hydroponic techniques. With raft hydroponics, plants are grown on a floating raft with roots extending into nutrient media. This approach adds considerable weight, depending on the depth of the hydroponic tanks, so it is most commonly used in ground-mounted greenhouses, not rooftop applications.

Nutrient film technique (NFT) hydroponics is used for leafy plants, such as lettuce, spinach, and basil; the nutrient solution is circulated through hollow plastic channels that support the plants, and the plant roots hug the surface of the channel to absorb the water and nutrients. This is a recirculation technique; nutrients are added to the solution in the reservoir. Of relevance to rooftop applications is the lighter weight of NFT compared with other hydroponic approaches or soil. The primary weight is the reservoir, which can be located on a portion of the roof that has adequate structural reinforcement—so the entire roof structure may not need to be strengthened.

Dutch bucket hydroponics involves buckets or bags filled with an inert media—such as perlite, vermiculite, or mineral wool—through which the nutrient solution is circulated; this system is used primarily for tomatoes, peppers, root vegetables, and other plants with more substantial stems. In this type of facility, there is greater weight spread throughout the greenhouse, both from the buckets and the plants themselves, which can be quite heavy when fully grown.

With Dutch Bucket hydroponics, nutrient solution is trickled through buckets or sacks filled with an inert growing medium.

Hydroponic farming necessitates precise management—including careful measurement of nutrient concentrations and adjustment of flow rates. Due to its chemical nature, hydroponics has traditionally been harder to manage organically than soil-based agriculture; hydroponic growers need to know precisely how much of various nutrients are being added to the growing solution, and that’s easier to do with synthetic fertilizers. Michael Christian, president of American Hydroponics in Arcata, California (www.amhydro.com), one of the leading suppliers of hydroponic equipment, told EBN that the hydroponic farming movement has so far been less focused on organic methods. That is beginning to change, though, particularly in Europe.

 http://www.buildinggreen.com/auth/article.cfm/2009/1/29/Growing-Food-Locally-Integrating-Agriculture-Into-the-Built-Environment/ 

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DIY Home Gardening Projects

Build a Rain Barrel

Build a Homemade Hydroponics System

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100 Foot Diet – Freedom Gardens

Grow what you eat, eat what you grow

With a nod to the 100 mile diet (spearheaded by Alisa Smith and James MacKinnon) and other eat local challenges, Freedom Gardens is presenting a challenge to bring food even closer to home. The 100 Foot Diet Challenge reduces the traveling distance from field to table from miles to a few steps—right outside your back or, even, front door.

You don’t even need acreage to be a “farmer.” Use your yard (or balcony or porch steps) not only to grow your diet but also to cultivate a healthier and more fulfilling life.

In the spirit of courage and “we-can-do-it” attitudes of previous generations who planted gardens in their front and back yards to support their countries’ war efforts, today we undertake the challenge to declare independence from corporate food systems and start a living protest right in our own back/front/side yards by planting for freedom!

■The challenge is simple. Begin as soon as you can; prepare a meal at least once a week with only homegrown vegetables, fruit, herbs, eggs, dairy products or meat, using as few store bought ingredients as possible.

■The purpose is plain. The undertaking of an all-out struggle for freedom from the forces that keep you dependent on the system of petroleum fueled food. The degree to which you rely on today’s artificial corporate structure determines the extent of your vulnerability. Resolve to lessen your dependence on outside food sources.

■The result is revolutionary. As you take back responsibility for your food supply, you’ll experience the empowerment and fulfillment that comes from learning the basic skills of providing for yourself and your family.

By planting a Freedom Garden and taking on this challenge, you, your family, and the planet will benefit.

■Eat more nutritious food, which leads to better health
■Reduce your exposure to unwanted, toxic pesticides
■Reduce the number of miles your food travels, lessening your dependence on fossil fuels and reducing carbon emissions
■Increased food security
■Improved quality of life through living in harmony with nature and eating with the seasons
■Save money; make money (see DerVaes Gardens)
■Reduce excessive packaging
■Combat global warming
■Get involved in your local food community
■Become independent of corporate food systems

Together, let us declare our independence and sow the seeds of freedom. This is a true revolution!

Visit this site to learn more about Freedom Gardens and to join this revolution!
http://freedomgardens.org/project/100-foot-diet/

I already attempt to eat as much locally produced food as possible, but even for me, this really is a challenge. Especially in the winter in Kentucky. As I mentioned in my last post, I recently bought a grow light to assist with growing sprouts and wheatgrass indoors, and to have my seedlings ready to plant come spring. I also always have at least one jar of sprouts growing at a time, whether alfalfa, lentil, clover, or some kind of bean or pea or grain. I have some potted herbs, but the lack of sunlight in the winter has been hard on them.

I always buy local first (local honey and apples are available pretty much year round, as are local raw cheeses and butter.) If I cannot find local, then I buy organic. I try not to buy things out of season, but I just love avocados and have a hard time going without. I have been buying winter greens, such as kale, which is actually cheaper than other greens this time of year.

This is my challenge for myself:

1. Grow and eat as many sprouts as possible until I can plant my garden.
2. Buy local/organic first, then organic, and seasonal produce as much as possible.
3. Make my own rather than buying (sauerkraut, kim chee, kombucha, mead, yogurt, etc.)
4. Grow the largest garden I can this spring and summer using heirloom and organic seeds.
5. Plant a fall and winter garden and maintain a passive solar greenhouse over the winter.
6. Set up rain barrels, use ocean water, and minerals on all garden plants.
7. Plant wild flowers because they are pretty and they attract bees to pollenate my garden.

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HOMEGROWN REVOLUTION – Radical Change Taking Root

http://www.pathtofreedom.com/

As I watched this video, I suddenly became aware that I had tears running down my face – tears of joy, tears of inspiration. This is my goal – to live self-sufficiently and sustainably. To grow as much of my own food as possible. Since I was very young, I have always felt a calling back to the land, although I was not quite sure until more recent years just what that calling was.

It is radical to grow your own food. To be independent. To put your love and intention into the food you grow and eat. Growing your own food puts you back in control of your life, your health. You control what foods you grow and how they are grown. No pesticides, herbicides, fungicides, or genetically modified crops. Organic and heirloom variety seeds; seeds which you can save and replant year after year.

I have recently purchased a grow light and will be starting the seedlings for my first large-scale garden as soon as I can. I also grow sprouts indoors year round, and with the light, I will be able to grow pea shoots, sunflower shoots, and wheatgrass in my kitchen. I have plans for building a greenhouse utilising passive solar heating during the cooler months. I have some garden experience (we always had one growing up) and I plan on visiting my grandparents often to learn from them. They have always had a nice sized garden as far back as I can remember. Every year they grow tomatoes, peppers, beans, lettuce, green onions, corn, squashes, cucumbers, and more. And they always have way more than they can eat themselves. I plan on learning the valuable art of canning and jarring from them this year. This is very exciting, but also somewhat overwhelming. I have to build raised beds, till up the soil in my back yard, mix in compost, learn about adding ocean water and minerals, and more. I feel like I am taking on such a challange, but one that will be well worth it in the end.

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How You Can Start a Farm in Heart of the City


By Kelly Coyne and Erik Knutzen, Process Media. Posted January 9, 2009.

Sick of flavorless, genetically modified, pesticide-drenched frankenvegetables? It’s time to start growing food in your back yard.

Imagine sitting down to a salad of peppery arugula and heirloom tomatoes that you grew yourself. Or a Sunday omelet of eggs laid that morning, served with a thick slice of fresh sourdough, butter and apricot jam — all homemade, of course. Or imagine toasting your friends with a mead made from local honey. Where would you have to move to live like this? A commune in Vermont? A villa in Italy?

My husband Erik and I have done all of this in our little bungalow in Los Angeles, two blocks off of Sunset Boulevard. We grow food and preserve it, recycle water, forage the neighborhood, and build community. We’re urban homesteaders.

Though we have fantasies about one day moving to the country, the city holds things that are more important to us than any parcel of open land. We have friends and family here, great neighbors, and all the cultural amenities and stimulation of a city. It made more sense for us to become self-reliant in our urban environment. There was no need for us to wait to become farmers. We grow plenty of food in our backyard in Echo Park and even raise chickens. Once you taste lettuce that actually has a distinct flavor, or eat a sweet tomato still warm from the sun, or an orange-yolked egg from your own hen, you will never be satisfied with the pre-packaged and the factory-farmed again. Our next step down the homesteading path was learning to use the old home arts to preserve what we grew: pickling, fermenting, drying and brewing. A jar of jam that you make of wild blackberries holds memories of the summer, and not the air of the Smucker’s factory.

When you grow some of your own food, you start to care more about all of your food. “Just where did this come from?” we’d find ourselves asking when we went shopping. What’s in it? At the same time, we began to learn about cultured and fermented foods, which have beneficial bacteria in them. Few of these wonder-foods are available in stores. The supermarket started to look like a wasteland.

A little history

The idea of urban farming is nothing new. Back in the days before freeways and refrigerated trucks, cities depended on urban farmers for the majority of their fresh food. This included small farms around the city, as well as kitchen gardens. Even today, there are places that hold to this tradition. The citizens of Shanghai produce 85% of their vegetables within the city, and that’s just one example of a long Asian tradition of intense urban gardening. Or consider Cuba. Cubans practiced centralized, industrial agriculture, just as we do, until the collapse of the Soviet Union in 1989. Overnight, Cubans were forced to shift from a large, petroleum-based system to small-scale farming, much of it in cities. Today, urban organic gardens produce half of the fresh fruits and vegetables consumed by Cubans.

The United States once was a nation of independent farmers. Today most of us do not know one end of a hoe from the other. In the last half of the 20th century, a cultural shift unique in human history came to pass. We convinced ourselves that we didn’t need to have anything to do with our own food. Food, the very stuff of life, became just another commodity, an anonymous transaction. In making this transition, we sacrificed quality for convenience, and then we learned to forget the value of what we gave up.

Large agribusiness concerns offer us flavorless, genetically modified, irradiated, pesticide-drenched frankenvegetables. They are grown in such poor soil — the result of short-sighted profit-based agricultural practices — that they actually contain fewer nutrients than food grown in healthy soil. Our packaged foods are nutritionally bankrupt, and our livestock is raised in squalid conditions. The fact is that we live in an appalling time when it comes to food. True, we have a great abundance of inexpensive food in supermarkets, but the disturbing truth is that in terms of flavor, quality and nutrition, our greatgrandparents ate better than we do.

There is a hidden cost behind our increasingly costly supermarket food. The French have a term, malbouffe, referring to junk food, but with broader, more sinister implications. Radical farmer José Bové, who was imprisoned for dismantling a McDonald’s restaurant, explains the concept of malbouffe:

I initially used the word ‘shit-food’, but quickly changed it to malbouffe to avoid giving offense. The word just clicked — perhaps because when you’re dealing with food, quite apart from any health concerns, you’re also dealing with taste and what we feed ourselves with. Malbouffe implies eating any old thing, prepared in any old way. For me, the term means both the standardization of food like McDonald’s — the same taste from one end of the world to the other — and the choice of food associated with the use of hormones and Genetically Modified Organisms as well as the residues of pesticides and other things that can endanger health. — The World is Not for Sale by José Bové and Franois Dufour

So what are the strategies urban homesteaders can follow to avoid malbouffe? Farmers’ markets, co-ops and natural food stores serve as good supplements to the urban homestead, but we’ve found that growing our own food, even just a little of it, rather than buying it, not only results in better quality food, it has changed our fundamental relationship to food and to the act of eating itself. Now, now not only do we know our crops are free of pesticides and GMOs but we discovered an entirely new world of taste and flavor that big agribusiness had stolen away from us. Growing your own food is an act of resistance. We can all join with José Bové in dismantling the corporations that feed us shit.

We’ve also shifted from being consumers to being producers. Sure we still buy stuff. Olive oil. Parmigiano reggiano. Wine. Flour. Chocolate. And we’re no strangers to consumer culture, not above experiencing a little shiver of desire when walking into an Apple computer store. But still, we do not accept that spending is our only form of power. There is more power in creating than in spending. We are producers, neighbors, and friends. Think you don’t have enough land to grow your food?

Change the way you see land.

Before you start thinking that you have to move somewhere else to grow your own food, take another look around. With a couple of notable exceptions, American cities sprawl. They are full of wasted space. As a homesteader, you will begin to see any open space as a place to grow food. This includes front yards as well as backyards, vacant lots, parkways, alleyways, patios, balconies, window boxes, fire escapes and rooftops. Once you break out of the mental box that makes you imagine a vegetable garden as a fenced-off parcel of land with a scarecrow in it, you’ll start to see the possibilities. Think jungle, not prairie. The truth is that you can grow a hell of a lot of food on a small amount of real estate. You can grow food whether you’re in an apartment or a house, whether you rent or own.

Do you have 4′ ? 8′ feet of open ground? If you don’t have a yard, do you have room on a patio or balcony for two or three plastic storage tubs? If you don’t have that, then you could get a space in a community garden, a relative or neighbor’s house, or become a pirate gardener, or an expert forager — some of the tastiest greens and berries are wild and free for the taking.

Think you don’t have time? Think again.

We homestead at our own pace, to suit ourselves. Some things, like bread baking, have become part of our regular routine. Other kitchen experiments, like making pickles, come and go as time allows. More ambitious projects, like installing a greywater system, take time up front, but save time once implemented. It’s unlikely that we spend any more time on our food-producing yard than we would on a traditional lawn-and-roses-type yard. You can set up your urban (or suburban) farm so that it takes minimal time to keep it going — we talk about ways to do that in this book.

Sometimes, when life gets too crazy, we don’t do anything beyond the barest maintenance, and eat a lot of pizza. Nothing wrong with that.

Besides saving time, with the exception of a few ambitious projects, like converting to solar, everything we talk about in this book is also cost-effective. Homesteading is all about reusing, recycling, foraging and building things yourself. Seeds are cheap, composting is free. Nature is standing by, waiting to help. And as oil prices continue to rise along with the cost of food, learning to grow your own may be one of the wisest investments you can make.

The paradigm shift

Urban homesteading is an affirmation of the simple pleasures of life. When you spend a Saturday morning making a loaf of bread, or go out on a summer evening after work to sit with your chickens, or take a deep breath of fresh-cut basil, you unplug yourself from the madness. Many of us spend a lot of each day in front of a computer. Homesteading hooks us into the natural world and the passing of the seasons, and reminds us of our place within the greater cycle of life.

Our style of homesteading is about desire. We bake our own bread because it is better than what we can buy. We raise our own hens because we like chickens, and we think their eggs are worth the trouble. Erik bicycles everywhere because that’s a thrill for him. There’s mead brewing in our guest bedroom because you can’t buy mead at the corner liquor store — and because fermentation is the closest thing to magic that we know.

Maybe you aren’t so into gardening, but would like to brew your own beer. Maybe you’d like to tinker with a greywater system for your house. Maybe you want to make your own non-toxic cleaning products. Try it! Start by doing just one project, one experiment, and you may well unleash the homesteader within.

The Urban Homestead: Your Guide to Self-sufficient Living in the Heart of the City by Kelly Coyne and Erik Knutzen

http://www.alternet.org/story/118483/?page=2

*I have added italics.

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