Three Rivers Community Farm is an 8 acre produce farm nestled behind the historic town of Elsah, Illinois, just a 10-minute drive north from Alton on the River Road. The CSA (Community Supported Agriculture) farm is one of the oldest and most established farms in the region and grows over 45 types of vegetables and hundreds of varieties on land connected to Principia College. Along with the edible plant varieties, the farm also grows and offers fresh-cut flowers.

Three Rivers Community Farm participates in the Tower Grove Farmer's Market in St. Louis and has a farm stand in Elsah that operates from May through October. The farm also hosts a plant sale every April.