Gavin asked about Hesperantha vaginata. Seed is readily available and easy to sprout in the correct season. Bulbs are not readily available. Grow it from seed. I got my seed from Silverhill Seeds in Capetown, South Africa. They ship to the UK. My one remaining bulb did not return this year, but I have seed from it. There are a lot of UK gardeners who grow winter-rainfall bulbs. I would think this is not an easy plant to keep alive in a cool damp greenhouse, so you should talk to some local growers about it. Leo Martin