They mostly prefer a more neutral ph but will probably still grow. They may not flower next year though. Better in a loam based soil, or good topsoil with a little compost added to it.

Thanks for your reply fractal. I have a potted blueberry and a lot of space around the edges of the pot that are bare. I would like to have some spring colour in there rather than leaving is bare. What about woodland bulbs like bluebells and snow drops? would they work?

Some dwarf Fritillaria's and Erythroniums would be happy enough. Anemone blanda and Anemone nemorosa and Trilliums would also be ok in there. Just liquid feed a few weeks before they would normally die down.

Thanks :)