What happens to my plantings if I delete a block?

They are not deleted, and your past seasons keep the block as it was. By default, the block leaves the season you are viewing and the next ones, and its plantings for those seasons go back to unassigned, ready to place elsewhere.

Check Delete this field block across all seasons only for a block created by mistake: it disappears from every season, past ones included, and all its plantings lose their place. A block in its first season can only be deleted this way.

See Edit, move or remove a location.