I have two baskets of Geraniums I got about two months ago. They look great except I can't get them to bloom very much. They had tons of blooms when I got them and one by one they wilted. I did what they said to do and pulled the dead ones off but only a few are returning. The plant itself is bright green and healthy looking, no brown leaves, and there is a couple buds getting ready to open on one plant but not the other. It's been a month sense the other one had any blooms at all. What else can I do to increase the amount of blooms like when I bought them?? They have Osmecote and full sun.