Golden Syrup tins

I am experimenting with the Golden Syrup tins to try to get the best effect. A hyacinth bulb on it's own is just too tall and falls over, especially without a window to lean it against (for the centre of the tables at Chin Chin).  Cutting the hyacinth short and packing the tin with shells, although pebbles or grit would work as well, to hold up the cut flowers seems to work better.

Golden Syrup tins with hyacinths and daffodils

I don't know what makes the £1 daffodils from Sainsburys open. Water? Sun? Heat? or how long it takes. I was at first pleased to get a whole bunch for only £1 but I soon realized, they aren't actually in bloom!