Weeds

This is a seed head from a fast growing weed that has taken over one of my pot plants!

I don't know how I've missed this but it has grown huge and is flowering with hundreds of flowers and all these seeds are floating around the whole rooftop garden aarrghh!!!!

The flower is very small, about the size of my little finger's nail! Tried a few methods to get a good shot of the whole plant because it does look rather interesting but I was happier with this macro shot in the end.