gentlegreen
I hummus, therefore I am ...
I was googling - apparently chocolate cosmos have sterile seeds ..oo is it? I've tried cosmos before but unsuccessfully. That was actually my second question that I forgot - will the seeds be viable if I've only got one of them? I tried spreading the pollen round a bit between flowers today.
You said they were F1s ?
Or do you mean it's the begonias that are F1 ?