An Organic Solution
By Ashley Symons, Writer/Editor
It's a Friday morning at Equal Exchange and one day short of the official start of Spring. A truck backs into one of our loading docks. But it's not here to take away boxes of Equal Exchange products. It’s here to pick up chaff.
"Chaff is a skin that comes off the coffee as it roasts," said Lead Coffee Roaster Thomas Lussier. "As the coffee dries out and expands during roasting, it sheds this skin." Each week, we produce about 30-40 tall garbage bags - about 430 pounds of chaff. That could be a lot of waste, albeit organic, but fortunately chaff has another use – in the garden. Coffee bean chaff adds helpful nutrients to a compost mixture, and is especially good for the growth of vegetables.
In the fall of 2008, Rodney North, Equal Exchange's "Answer Man," started looking for ways to distribute chaff to local farmers. Eva Sommaripa, a certified organic grower of fresh culinary herbs, cut flower bouquets, edible flowers and specialty greens, took interest. Her business, Eva's Garden, is based in South Dartmouth, Mass. They make deliveries to markets and restaurants in the Boston area and could easily pick up chaff on the trip back to South Dartmouth. "As an organic farmer she was more interested than most in making her own compost and getting an organic compost ingredient was a plus," North said.
James Reynolds of The Dahlia Farm in Middleboro, Mass., has also utilized chaff from Equal Exchange for the last year. The farm is an organic CSA producer of vegetables and cutflowers. "We're regularly experimenting with alternative means of production," said Reynolds. "Initially I used the chaff as a general additive to the farm's clay-loam soil, but soon began to specifically target mulch and bedding, mixing the chaff with soil to make a lighter backfill for both leeks and potatoes – both of which require a series of stem-covering during the growing season. The chaff is a good substitute for foul bedding as it absorbs excess moisture and ammonia, which is later turned into compost."
Don’t have access to chaff? Instead of throwing out your coffee grounds after brewing, put them in your garden! Coffee grounds are high in nitrogen, and can be sprinkled around plants, added to compost piles, or mixed into soil for houseplants or vegetable beds.
Our very own Banana Coordinator, Nicole Vitello, is also an organic farmer, and has used coffee grounds in her compost pile for years. "As an organic farmer, compost is a key ingredient in soil fertility but also in improving soil tilth," Vitello said. "Tilth is the structure of the soil and relates directly to its ability to aerate plant roots and both hold and shed moisture. In New England, farmers often have to contend with high clay concentrations in the soil which can make it heavy and difficult for plant roots to penetrate and access available nutrients."
Just like with coffee roasting, gardening is a mix of art and science!
