Are you growing from seed under lights, inside? If so it does not work well to have them in the same container. When they are big enough to transplant, they may then be combined. Al

Yes growing from seed. how big untill transplant?

and they will do ok in the 2 different soil types?

i have begun to put one type of plant in its own container the last few years, especially large plants like coleus and elephant ears. this way they don't overpower other plants and you can move the pots around to suit them in an everchanging arrangement.