1. Q: Can caladiums be planted indoors?
A: Yes. While growing, caladiums need night temperature in the high 50's and days around 80, constantly moist soil and fertilize every other week. They are at their best in bright indirect light; a north or east window is ideal. Tubers must rest in the winter the same as outdoor caladiums.
2. Q: How do you care for caladium bulbs over the winter?
A: Lift tubers in fall. Dry in warm place above 40 degrees. When tops die back, clip off. Clean tubers gently and dust with sulphur and store where they are cool but will not freeze. Try to keep bulbs from touching each other. Store in dry peat moss, vermiculite or perlite. Second year foliage is usually not as good as the first year; therefore more satisfactory results may be obtained by starting with new tubers each year.
3. Q: When is correct time to plant caladium bulbs?
A: Wait until after May 1. Soil temperature needs to be at least 70 degrees.
4. Q. Can caladium bulbs be saved from year to year?
A. Saving caladium bulbs in this area is not recommended since bulb size usually decreases after one year's growth. I have had better luck storing and regrowing tubers of the white- foliaged types. If you want to try to save caladium tubers for another year, dig them as soon as possible and allow to dry in a well-ventilated but shady area. After 7 to 10 days, remove leaves and dirt, then pack in dry peat moss, vermiculite or similar material for storage. Pack tubers so they do not touch each other. Dust with all-purpose fungicide such as Captan (Orthocide) as you pack. Place container in an area where temperature won't drop below 50 degrees F.