Indoor plants that thrive in medium light are typically those that live on the edge of the jungle in the wild. These plants are used to receiving half sun and half shade, making them prime candidates for medium light. Medium light refers to one to four hours of bright or direct sun or four to six hours of filtered sun, like through a curtain, each day. These plants will typically grow well near a west or a southeast window.
The African violet is a fuzzy-leaved indoor plant that blooms with purple and pink flowers. Also known as the Saintpaulia, this plant grows best in average to warm temperatures with medium to high humidity. Avoid getting water on the leaves, and use a diluted fertilizer every time the plant is watered. Between waterings, the plant should be kept slightly dry.
There are several varieties of jade plants that will work well in your house in medium light. Silver jade, Crassula arborescens, has blue-gray leaves and rounded, compact heads of pink flowers. Copper jade tree, Crassula ovata "Bronze Beauty," has coppery green leaves and slow-growing stems. Tricolor jade, Crassula ovata "Tricolor," has white- and rose-striped leaves with white and pink flowers. Jade plants should be kept semi-dry in between watering, which should make the soil moist, but not wet.
The Christmas cactus, Schlumbergera, blooms with red and pink flowers and grows well in medium light. Some owners refer to the plant as a Halloween cactus or a Thanksgiving cactus because it may bloom at any time after October. Soil should be left to dry in between waterings, which should be sparing in the winter. The Christmas cactus can survive in average to warm temperatures and does not do as well in the cold.
Bromeliads grow extremely well indoors with medium light. There are many varieties of the plant, which has brilliantly colored leaves and flowers. The plant does not require much soil. Make sure it is well-drained so that the roots are not sitting in water. Bromeliads bloom once in their lifetimes and then reproduce with pups that can be harvested for blooming the following year.
The moth orchid, or phalaenopsis, comes in many colors. Just one bloom can last over a year and a half. The orchid thrives in medium light and also grows well with cool nights and warm days. Do not water the orchid too much, and make sure to fertilize the plant once a month.