Galactic Seed Vault

The  was a facility on the ice planet Calufrax Major for storing and preserving samples of plant seeds from across the universe in case of a global cataclysmic event.

History
It was created by the First Gardener with the help of Time Lords. At some point, renegade Gardeners who preceded Nightshade by ten generations smuggled a weaponised seed into the vault. (PROSE: The Secret in Vault 13)