I intend growing geraniums in pots this season. I buy my plants from B&Q in cell trays. I need advice regarding pinching out to avoid plants going leggy. I have not grown them before. I read somewhere that geraniums produce more flowers if they are left unwatered. Should I leave them to virtually dry out before watering? What is the feeding (if any) & watering programme? I usually mix in Growmore to the compost before planting bedding plants. Is this OK for geraniums????