The only other aliums on the plot which had set seed were chives and having read that members of the onion family don't tend to cross pollinate I thought we probably wouldn't be growing any rogues. Plus this stand of leeks was a single variety; I normally grew two types - one for maturing in the autumn and another that will stand right through the winter without running to seed too early. I forget why we only had the one variety - Monstreux de Carentan - which in theory were good only into early January.
