There are a number of reasons why ivy turns brown, including lack of sunlight, excessive heat, deficiency or excess supply of water, inadequate humidity, viral infection, nutrient deficiency and cold drafts. Normal aging of the plant is another cause of leaves turning brown.
Ivy can be a tricky plant to grow indoors. The plant does not sustain well with direct sunlight but does require plenty of light. A well-drained potting soil is preferred. The soil should not be allowed to dry out. Instead, it should be kept evenly moist. A controlled-release fertilizer should be fed to the plant during the growing season.