The nearest Dewsbury Road trough to me is turning into a host of golden daffodils.This is a planting idea from the same issue of the 'Garden' that offered the free vegetable seeds.
They did an article on nigellas. This one is Nigella damascena planted with Eschhscolzia californica. Sarah Raven, who wrote the article, says they grow best direct sown in March or April and thinned to 30cm apart. I'm wondering where we can try it!