This easy-going plant will be happy in general potting soil although it will appreciate some sand or perlite to give the soil good structure for effective drainage. Over-watered spider plants are susceptible to root rot so well-draining soil is essential. The optimal lighting conditions for spider plants are bright indirect sunlight. However, these hardy plants will still grow in semi-shady conditions and can tolerate some direct sun. Your plant will appreciate a generous drink around once a week in the growing months and around once every 2-3 weeks in the winter. The roots are fleshy and tuberous as an adaptation to store water in their naturally arid, native environment and consequently, if you forget to water your spider plant, it will be okay for a little while.