The Council of the Isles of Scilly does not provide or administer allotments. However, there is an Allotments Association on St Mary’s that rents sites from the Duchy of Cornwall. There are 4 sites in total at Porthcressa, Moorwell, Old Town and Normandy.
You can apply for an allotment by writing to the Secretary of the Allotments Association:
5 Sally Port
Isles of Scilly