GeoGraph - photograph every grid square

Ornamental alliums at Hampton Court Flower Show

The show covers a large area either side of the long water at Hampton Court. A big difference from the Chelsea flower show is that exhibitors don't just show their wares - they sell them, and you see visitors walking around with carrier bags and trolleys loaded with plants. There is a plant creche where plants can be left till you are ready to leave the show, and a service to deliver plants to the car parks.
The alliums shown are on the stand of the Dutch firm Warmenhoven Link . We had some ornamental alliums in our garden but over the years the flower heads have become smaller - apparently we should deadhead them to avoid this. I bought three bulbs of Globemaster - the one in the photo, or else very similar.