We planted these tiny seeds on 30th March and have had all kinds of weather since including frost. They were a ridiculously cheap 29 pence and even cheaper because it was also 3 for 2. Next year I will definitely be looking out for these again and filling a few more large pots with them. They are called 'Fairy Bouquet' or 'Linaria'. The photo doesn't do them justice at all. They are quite small and delicate but work well en masse.