Orange and purple

Today's the day ................................ for a puzzle

Can you tell what it is yet?

It is growing in the allotment plot next to Will's in the middle of a bed of onions - but it's not a vegetable. There's only one of them and what it's doing there, I have no idea.

Who would ever have thought of putting those colours together or arranging them in a pattern like that? And it's only when you take a picture of it and zoom in - that you realise that this is how it is.

It's a lupin ................................