Leeks

 I was kindly given some leeks (along with other vegetables) last year by my neighbour who had too many for his allotment.  So, I duly planted them in a patch in my garden and what with all of the work for my degree and other things forgot to use them.  They then started to develop a bulge at the top so I thought might as well see where this goes, and they produced flowers which the bees love (click on the photos to see them up close, click twice an you can see its proboscis).

For those who don't know, Leeks are Alliums so they produce flower heads similar to the ones you may well see in a garden or nursery, and mine will be staying there until they fall over!