A few weeks ago I went to shoot some fill-in material for a story on the drought I was doing for Landscape Architecture magazine. I thought the juxtaposition of the two subjects really told the story of how bad it is and how far we need to go before all of us out here in the southland start to take some responsibility ourselves for improving the situation.It is pretty clear that we may be in this for a while. A report last week from the National Oceanic and Atmospheric Administration's Climate Prediction Center indicates a poor forecast for rain and more importantly the snowpack in the Sierra Nevada for this winter.Read More
Last July I wrote about the start of construction of Ed and Rachelle Begley’s new home in their attempt to build one of the Greenest homes in North America. The steel framing had just begun and now these months later the sheathing is being laid over that frame. Recently two new water systems started to be installed that will help Ed and Rachelle save on water bills as well as recycle much needed water back to the aquifer.Read More
Earlier this Summer I visited the Eagle Street farm, a 6,000 square foot garden on a warehouse rooftop in Greenpoint, Brooklyn. It was the first rooftop farm I had seen and I was very impressed by what they were able to accomplish and grow. Two weeks ago I went out to Long Island City to see the Brooklyn Grange Farm and was expecting something along the same lines as Eagle Street, perhaps a bit more ambitious. As I walked along Northern Boulevard and looked up at the building, I wondered what portion of the roof they were actually using for the garden. Walking out onto the rooftop of the farm I was completely unprepared for the magnitude of what I saw in front of me, essentially the whole roof of the building was taken up by the farm, 40,000 square feet, almost an acre of rooftop, was devoted to rows and rows of vegetables and crops.
Both Farms were started by head farmer Ben Flanner, a Wisconsic transplant, who along with his partners, broke ground on the Brooklyn Grange Farm back in May of this year. The farm was originally intended to be in Brooklyn, but let’s face it, Brooklyn sounds better than Queens anyway (I was born in Queens so I can say that). It utilizes 1.2 million pounds of soil, and if there is one question I regret not asking, it is how they got it up there. Nonetheless, the structural integrity of the roof was tested and supports a drainage system and even has a barrier layer to prevent roots from penetrating the ceiling below. Scattered around a mélange of rooftop pipes, pumps, fans and water towers, were crops of okra, kale, eggplant, jalapeño peppers, carrots, spinach, assorted greens and an abundance of tomatoes. There was even a beehive located in the SW corner. The organic farm is a for profit venture, selling to restaurants and to the public through their various produce stands. It is open also to the public, and if you ever think you have seen it all in New York, go out and take a look at what is fast becoming the future of urban farming and the new look for New York rooftops.
A few weeks ago I talked about the idea of converting urban rooftops into urban farms. The benefits go beyond just having more locally grown food, a reduction in transportation costs and mitigating the urban heat island effect, it helps people understand how food is grown, something too many of us have lost in a world of packaged foods, fast foods and ready to eat everything. But learning to grow a garden, let alone an urban farm can be a big jump for people. There is the issue of working in small, sometimes confined spaces, and how do you set up irrigation systems and get the energy to run them. These are challenges that got some people thinking a few years ago at an organization called New York Sun Works, and so they set out to create some prototypes for urban gardening that would help them and others understand how to create agricultural systems that work in an urban environment. They created the Science Barge.
The Science Barge was launched in May, 2007, and over the course of the next year or so, was moored at several spots along the Westside of Manhattan on the Hudson River. It is now run by Groundwork Hudson Valley and has found a permanent home in Yonkers. Visitors and schoolchildren are welcome to visit and learn about urban farming and sustainability, enabling them to create a vision for urban living that so far had been reserved for their rural neighbors, namely growing their own food. The barge is powered by two raised solar panel arrays, some micro wind turbines on the roof and bio-fuels. Water for irrigation is gotten from rainwater collected in a 1,200 gallon cistern, and Hudson River water that is run through a reverse Osmosis filter that purifies it for use.
The day I visited, I saw greens, lettuce, tomatoes and melons growing from a variety of Hydroponic and Aquaponic systems along with a few examples of vertical farming. Aquaponics is a bio-integrated food production system that is a combination of Aquaculture and Hydroponics, which basically means that the waste products of one biological system serve as nutrients for a second biological system. The first bio-system contain fish, the feces of which are broken down by algae in a second tank which then distributes the nutrients to the plants, the second bio-system. The plant system filters, cleans and recycles the clean water back to the fish in the first tank. The fish and algae create the nutrients the plants need, and the plants prevent a toxic build up of nutrients that would eventually harm the fish, essentially recreating a nutrient cycle normally found in nature.
Nearby was a table of greens being grown using the Nutrient Film Technique, a hydroponic system using a shallow stream of water containing nutrients that continually recirculates past the bare roots of the plants which are held in channels or gullies. There were also a series of plastic pots containing cucumber plants using another hydroponic system, a drip process call the Dutch Bucket system.
The Science Barge had over 3100 students visit last year as part of the barge’s formal education program. They also have a High School internship program that employs students from Yonkers. The general public can visit on weekends, here are their hours. Educating others on the benefits of urban farming is going on in many places around the country, including a number of Master Gardener Programs that bring this information directly to communities, but the Science Barge is a particularly assessable way to witness and explore this growing trend. The systems employed on the barge also happen to be high yield, and low impact as far as it’s carbon footprint, and maybe most importantly because it utilizes greenhouses, it is climate independent in that it can yield crops all year round. I keep saying it, but imagine a city of green roofs and greenhouses feeding the residents of the apartment complexes below them, what a site and what a step forward that would be.
I’ve been on vacation a week, but before I left Los Angeles I shot a couple of green roofs in downtown and South Central. They were two very different kinds of green roofs, one a Japanese Garden, the other an environmentally designed sustainable roof for city councilmember Jan Perry’s local headquarters. The Japanese Garden on the third floor of the Kyoto Grand Hotel in Little Tokyo is a half-acre of waterfalls and bamboo shaded alcoves, and even has a little stream running through it. And while it is pretty to look at and may even keep the building a bit cooler, the sustainability factor is pretty low as one can only wonder how much energy is used to keep the waterfall and stream constantly flowing. Still if you want to see the novelty of a manicured Japanese rooftop garden with the Los Angeles skyline behind it, take the elevator to the third floor of the hotel, which is located on the corner of Los Angeles Street and 2nd st, and take a little stroll.
Driving south from there along South Central Avenue, you come across a striking looking building, and a stark contrast to the rest of the neighborhood it resides in. It is Council District 9 Neighborhood City Hall, the offices for councilwoman Jan Perry. Designed by architect Paul Murdoch, the Leed certified building features a drought tolerant rooftop garden that helps mitigate storm runoff and reduces greenhouse gas emissions. A 7,000 gallon underground cistern also collects rainwater for re-usable irrigation. The courtyard contains eight raised photovoltaic arrays that move during the day to track the sun while shading the space below, and also contains more drought tolerant plants around the perimeter of the gated compound that takes up the whole block.
As much of a contrast as these two green roofs may be to each other, they are still the exception when you think about all the other urban rooftops out there. This was made even more apparent when last week I was driving through the Berkshires and was surrounded by thousands of acres of rolling hills of green forests and lush valleys. Imagine for a minute if all the flat rooftops in a city like New York or Los Angeles were converted to green roofs. What would that look like? Now what if some or even most those green roofs were actually small urban farms growing fresh fruits and vegetables, like the Eagle Street rooftop farm I shot the other day in Greenpoint, Brooklyn. The impact of this would be tremendous: cooler buildings while lessening the urban heat island effect (a metropolitan area which is significantly warmer than its surrounding rural areas); local grown produce would mean a big reduction of the energy needed to transport them otherwise; improved health by eating better, and a beautiful green urban landscape that would have an enormous affect on greenhouse gases and carbon emissions.
Is this possible? Yes, but probably not anytime soon. One of the reasons is I still think we see them as unique anomalies rather than the norm. Obviously a green roof or a solar array is the smartest alternative to the empty spaces that reside on top of most buildings, but we are not used to seeing them or thinking of them in that way. This is starting to change, but a big factor that needs to alter is something I am starting to call the Visual Aesthetic. This is not some innate aesthetic we are born with, rather it is what we get used to and accept as the norm. When this starts to change, and I believe it is, then we can start to make real progress. More about this in the next few weeks.