A little water every 7 days and medium light is what I give these succulent plants. The tradescantia will become much longer with age if you don't prune it back. You can prune it to the size and shape you want.

Though I am transitioning to organic methods, I have used a synthetic pesticide in the soil (absorbed by the whole plant) that is said to last a year but is not safe for bees (or people or animals) so please take one of the following precautions if your plant flowers: 1) change the soil, 2) bring the planter indoors before and while the plant blooms, 3) cut the flower buds off if there is a chance that a bee will come in contact with them, 4) keep the planter indoors until about May, 2018. Thank you!