Posted: 04/05/2013 at 13:29
I would definately pot them on, 1 litre should be ok. They will flower better if they are pot bound so I have always grown in containers. (Not terracotta because the plants will crack them as they become more restricted.) Experimented with planting in garden with no success. So its containers in a sunny position well fed and watered throughout the summer and moved to a cold greenhouse in winter. The bigger plants can be left outside if in a sheltered position (against house wall) and maybe a bit of fleece if really bad weather forcast. Hope this helps. PS I'm no expert but this works for me!