Absolute newbie here. I will be planting a garden this summer in front of a stone wall in an area that is shaded by a tree. I intend to use a mixture of various color caladiums. I have two questions. Can I expect the plants to multiply as time goes on? (I realize I need to wait till the soil is fifty degrees to plant, and pull the bulbs out before frost). It is recommended by at least one Florida grower that I wait until June to plant the bulbs. Can I anticipate a reduction in prices of bulbs if I wait or should I buy now? This website is just the best!