Posted: 22/11/2016 at 20:57
You can start the Sweetpeas now in the greenhouse, or in a cold frame (I must remember to get another cold frame my self) Yes, the Nigella and cornflower are best planted in spring now. You can put them in up to late September to start them, and they usually survive over winter, but if it gets too late in Autumn the seed will be more eaten or rotted in the wet than germinated, so it is best to wait till it starts to warm up again.
My favourite plants are Clematis. I have a huge collection that I have grown mostly from seed, or from pinched cuttings.
The two main types of cultivated Sweet-pea are both very pretty. The perennials don't smell, but are very reliable at returning each year. I have some seed grown, woodland species sweet-pea plants. I like all species plants best. I find that though they haven’t been bred to be as big and beautiful, they have more resilience weather wise - and that has to be good up here!