Green String Farm is a 140-acre (57 ha) natural process, sustainable farm near Petaluma, California that grows fruits and vegetables year-round and sells them in an on-site farm store that is open to the public seven days a week. In addition to produce, the farm also supplies free-range eggs and grass fed beef to regional restaurants including the famed Chez Panisse in Berkeley, CA. Bob Cannard and Fred Cline founded Green String Farm and the Green String method of sustainable farming in 2003. The Green String method meets the highest standard of environmental sustainability practices, which is different from Certified Organic.