Siena Farms

What they do

Siena Farms grows 100+ varieties of vegetables, flowers, and mushrooms on 50 acres of protected farmland in Sudbury, Massachusetts — about 25 miles west of Boston. The farm has run for 21 years (founded by Chris Kurth). The operation runs three distribution channels in parallel:

• CSA shares. Weekly and flexible-payment farm shares distributed across Eastern Massachusetts and into New York. The CSA is the financial backbone — members pay up-front for a season, the farm has working capital, the eater receives a weekly box of what’s actually being harvested that week.
• Two Boston retail storefronts. The South End shop at 106 Waltham Street and a counter at boston-public-market on Hanover Street. Together they put Siena’s produce in front of city eaters who can’t make the drive to Sudbury.
• Restaurant supply. Siena supplies oleana, sarma, and sofra — the Cambridge / Somerville restaurant cluster run by chef ana-sortun, who is married to Kurth. The Sortun-Kurth restaurant-and-farm partnership is one of the canonical examples of the farm-to-table chef-farm pairing model in the contemporary US.

A note on specific crops grown

The farm’s marketing surface advertises “100+ varieties” without enumerating them publicly — Siena’s /csa and /about URLs both returned 404 at last fetch, suggesting the detailed crop list lives in member-only newsletter archives or seasonal CSA-share announcements rather than on the public site. The varieties shift week to week with the season; the published source-of-truth is the CSA share contents, visible to members in real time but not archived publicly. Future curators with member-side access (or willing to harvest the weekly share posts from Instagram) could populate a named-variety appendix here.

Why it’s listed

A 21-year-tenured family farm running protected-farmland production, a substantial CSA, two city retail storefronts, and a restaurant-supply line into a category-defining chef cluster — that’s the multi-channel substrate-and-circulator model the directory exists to surface. The protected-farmland piece matters: Sudbury sits inside the western-suburbs ring where housing pressure has erased most working farms in the last 40 years. Siena’s land is held in agricultural-preservation status via conservation-easements — lands-sake, sudbury-valley-trustees, and the Massachusetts Department of Agricultural Resources all play roles in the regional easement network.

Bioregional fit

Siena Farms is the canonical Greater Boston farm-to-table anchor — the Sudbury farm is the substrate, the South End and Boston Public Market storefronts are the circulator, and the Sortun restaurant cluster is the downstream culinary layer. The bioregion entry greater-boston was seeded specifically by this listing.

See also

Auto-generated from this entry’s typed relations: frontmatter, grouped by relation type so the editorial signal isn’t flattened.

• Instance of: community-supported-agriculture
• Shares approach with: alstede-farms · organic-valley
• Member of: farm
• Contained by: greater-boston

Sources

• Siena Farms website
• OpenStreetMap: bulk Overpass ingest 2026-05-11 (original compact entry pre-densification)

Related concepts: farm · community-supported-agriculture.

A listing in the 0mn1.one directory. Filed under greater-boston in the directory.