So long as you pick the right potting mix for the type of plant you're potting up, there's no need to worry about drainage issues. A potting mix, on the other hand, is a lot more efficient and effective than making your own. Make sure the container has enough drainage holes for its size before adding potting mix. Because gravel and other chunky materials make it more difficult for water to drain from the soil in your container, you should avoid using them. If you already have a plant in a container, remove it from the container and replace the potting mix at the bottom with well-draining soil. Alternatively, you can report the plant in a larger container with a fresh batch of soil. Add Wettasoil granules to the soil of a container plant if water is dripping off of it.