I've been pouring over Sarah Raven's lovely Summer brochure. I do not have green fingers and haven't done mail order plants before.
The flowers I like are all SEEDLINGS (Euphorbia Oblongata, Salvia viridus Blue & Cerinthe) and I'm not sure what to do with them. Can they go straight into the garden or do I have to let them grow into bigger plants indoors before I plant them out? I don't have a green house.