Laura Tangerini (L), Xave Jacoby (C) and Will Adams pick butternut squash at Tangerini's Spring Street Farm in Millis, Massachusetts August 20, 2009. In the CSA system, customers pay up front in the spring, typically $500 to $600, for a share of the farmÕs produce picked up weekly through the harvesting season. To match feature: USA-FARMS-COMMUNITY REUTERS/Brian Snyder (UNITED STATES)