Q.What Is Best For Caladiums?
I have an area that gets little to no sun and has moss growing in the space. Would it be possible to plant Caladiums in this area?

Certified GKH Gardening Expert
You're in USDA Zone 6b (zip code 63334, northeast Missouri), so yes — there’s a slight adjustment worth noting:
Caladiums are not cold-hardy in your zone, so you'll need to plant them after your last frost,each year, typically around mid-to-late April or early May, once the soil hits 70°F (21°C). If the area stays cool longer, you might need to wait a bit longer or start them indoors in pots to give them a head start.
Also:
In your zone, you'll need to dig up the tubers in fall before your first frost (usually mid-October), let them dry, and store them indoors until spring. Otherwise, they won't survive winter.
https://www.gardeningknowhow.com/ornamental/bulbs/caladium/caladiums-care.htm