My nonstop tuberous begonias really live up to their name and look spectacular in a planter under my maple tree. Everybody who visits compliments the prolific red & yellow blooms. They produce two kinds of flowers, male & female each looking totally different. Yours are doing the same thing. That's just what they do. Enjoy them!

thanks bathgate

when you say a different flower do you mean it is a different shape or colour?
if its the shape that's different it is probably as Bathgate says due to the sex of the flower.
take a close look at the yellow centre parts. the female bits look like a velvety yellow worm,
where as the male flower looks like a bottle brush.

if its a different colour then that could be a genetic cause or the effects of the weather or nutrients as it was developing.