A couple of months ago we saw this field covered in blue flowers. The harvest of linseed is ripening nicely now.
Linseed is used in the production of linoleum (the clue's in the name I guess!), putty and linseed oil for treating wood (famously, cricket bats). With synthetic replacements for all of these, the main use today is in food: linseed is high in omega 3.
Bracebridge Heath, Lincoln.