Alliums are part of the onion family and are grown for their spiky round flower heads in purples and reds.
This display was at the Dorothy Clive garden a week ago. I think the leaves are from a different plant that was growing below the allium stems. I think if we go back in a few weeks a completely different set of flowers will have opened up. If you are in Staffordshire I would recommend a visit. The garden is down a country road and is on a sloping hill. Lovely on a summers day.
I wish our garden was sunnier but we planted a lot of trees soon after moving in and now the garden resembles a jungle. Still that must be good for our carbon footprint.