Accession season 2026 · 4,180 lines in cold store

The crops nobody patented, kept at minus twenty.

A working seed bank for landrace vegetables and cereals. Everything here is open-pollinated, freely available to any grower who asks, and grown out on a rotation so the stock stays alive rather than merely stored.

4,180

Accessions in store

612

Grown out this season

0

Patents, ever

10 mm

Accession CF-0221

Collected Skåne, 1974

Species Secale cereale

Last grown out 2024

The register

Viability retested every five years, published either way

CF-0221Secale cerealeÖland landrace ryeCollected 197494% viable
CF-0408Phaseolus vulgarisRyder's greasy beanCollected 196188% viable
CF-0517Brassica oleraceaNine-star perennial broccoliCollected 194871% viable
CF-0663Triticum turgidumRivet wheat, DevonCollected 195590% viable
CF-0729Allium cepaUp-to-date onionCollected 198238% viable, regrowing 2026
CF-0844Pisum sativumCarlin peaCollected 196996% viable
CF-0901Solanum tuberosumLumper potato, true seedCollected 199322% viable, priority

Seven of 4,180 shown. Two lines here are below our 50% threshold and go into next season's grow-out ahead of everything else.

A seed bank is a farm, not a freezer.

Store

Dried to 6%, then frozen

Seed goes into laminate foil at minus twenty. At that moisture and temperature most cereals stay viable for a century, and most brassicas do not, which is why the next two steps exist.

Grow

Six hundred lines a year, in soil

Every accession is grown out and re-harvested on a rotation. Isolation cages for the outbreeders, and a volunteer network of 140 growers doing the rest on allotments.

Give

Free, and yours to keep

Any grower can request up to five lines a season at no charge. There is no material transfer agreement, no royalty, and no clause about what you may breed from it.

Requests open in January and close when the packets run out.

Tell us what you grow and roughly where. We prioritise growers within the climate a line came from, then anyone willing to send harvest notes back at the end of the season.

Request seed for 2027
Lines per growerFive a season
CostNone, including postage
Asked in returnHarvest notes, if you can
Restrictions on breedingNone
Duplicate storeSvalbard, since 2011