I am brand new to plants, flowers, and gardening. I bought (what I believe to be) two different kinds of Coleus from a local nursery. The plants were already growing, albeit small. They were in those little containers for seedlings, and I took them out and planted them in groups in a large urn planter for outdoors. I drilled holes in the planter to make sure they drained properly, and added some small gravel at the bottom for even more drainage. The plant's roots still have like 6" or more before being near the gravel though.

I believe one of the types of Coleus I purchased is Dwarf Coleus. It seems like it's wilting to me. I read something on here awhile back (but can't find it now) about using a water and epsom salt mixture. Can anyone tell me what that mixture is for, and what the proportions of each are, and how often to use that mixture when watering?

Any other advice on how to keep the Coleus alive and healthy, and BIG, would be helpful!