Light: In the wild Pilea Spruceana 'Silver Tree' grows as a creeping vine along the ground underneath the forest canopy. In your home it will do best in medium indirect light, and may even tolerate low light. Make sure to keep leaves from any direct sun as the they will burn.
Water: Never allow Pilea Spruceana 'Silver Tree' to dry out completely. Water when about 1-2" of the soil has gone dry. Be mindful of the light your plant lives in, this will dictate how quickly your plant can use the water in the soil. To keep leaves from developing brown edges give your plant a source for added humidity.