Siena Farms

What they do

Siena Farms grows 100+ varieties of vegetables, flowers, and mushrooms on 50 acres of protected farmland in Sudbury, [[barre-ma|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 [[greater-boston|Eastern Massachusetts]] and into [[beacon-ny|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-easement]]s — [[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|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 [[directory|the directory]].