Planting Geraniums

Geraniums require warmth to germinate says the seed packet, This is the first time I have grown geraniums. The packet suggests starting the seed on moist paper towels but I find coffee filters better - they do not fray apart. I wet the filter with warm water, squeeze it out and sprinkle the seed on a third of the circle and fold it in half and then into a cone shape. I put the filter into a ziplock and on the shelf in my heated back porch. The impatiens and lobelia in their flats are out there too. Geraniums are quick to germinate, it sez here. I plant only three packs, two shades of pink and a white. There are only a few seeds in a pack.