
2026 CSA Farm Shares
Registrations are now open for our 2026 season. All 2026 CSA Farm Shares are 15% off through Nov. 1st, 2025!

2025 Autumn & Winter Farm Shares
Our 2025 Autumn Shares are underway and available at pro-rated pricing, and our 2025 Winter Shares begin the week of Dec. 1.
Community Supported Agriculture (CSA) is a collaboration between farmers and their customers. When you purchase a CSA membership, you support our 50-acre farm through the inherent risks, and delicious rewards, of farming in New England. In return, you share in our harvest with a weekly box — a Farm Share — of fresh produce from our farm.
Seasonal, Year-Round, and Specialty Farm Shares are available, plus our new Monthly CSA Subscriptions. Enroll in a Monthly Vegetable or Mushroom Subscription anytime, any season — and start right up next week! Designed for new and returning members, you can now join our CSA one month at a time, with easy monthly payments.
Office and home delivery is available year-round throughout Eastern MA from Worcester to Boston, the North Shore and Cape Cod, as well as Manhattan and Brooklyn.
Or, pickup from one of 35+ convenient pickup sites.
Schedule Options: Choose between WEEKLY Shares and FLEX Shares (flexible schedule averaging every other week, but fully customizable).
Size Options: Choose between our Classic Vegetable Share (half-bushel box) and our Small Vegetable Share (third-bushel box).
About Us
We’re a family farm, in our 21st year of operation, cultivating 50 acres of protected farmland in Sudbury, MA. We grow over 100 varieties of vegetables, flowers, and mushrooms for our year-round CSA, our farmstores in the Boston Public Market and Boston’s South End, and select restaurants and chefs.
Check out our Virtual Farm Tour!
Visit Our Farmstores!
Siena Farms South End
106 Waltham Street, Boston
Monday - Saturday, 11am - 7pm
Sunday, 11am - 5pm
Siena Farms @ Boston Public Market
100 Hanover Street, Boston
Monday & Tuesday, 8am - 6pm
Wednesday - Saturday, 8am - 7pm
Sunday, 10am - 6pm
Shop off our shelves for veggies, fruits, flowers, pantry items, and more — OR place your order online via Mercato for home delivery!