Lobelia ‘Crystal Palace’ are best started off indoors anytime from January up until the end of April. Using either a seed tray – or more ideally a plug tray – fill to the top with a good quality multi-purpose seed compost then tap it down firmly to get rid of any large air pockets. Water the compost in well then allow to drain thoroughly to prevent it from becoming waterlogged. Sow the lobelia seed directly onto the surface of the compost then cover with either glass or clear plastic to help preserve humidity. Place in a warm, bright position such as a south facing windowsill and after 14 – 21 days the new seedlings should begin to emerge. Remove the glass or clear plastic cover at the first sign of growth otherwise fungal infections can take hold. After another 2 – 3 weeks when they are large enough to handle, transplant the seedlings in small clumps into 3 inch pots. These can now be grown on for a few more weeks in a cooler but not cold position. Gradually accustom the plants to outside conditions before planting outside permanently when the threat of frost is over.