Location

• Flowering house plants should be kept in an east-facing window, which provides plenty of indirect sunlight and moderate temperatures. South-facing windows are a good alternative if an east window is not available. Use curtains or blinds to moderate the light and temperature if the plant must be placed in a window that causes too much heat.
  
  

Climate

• Use a humidifier to increase the humidity levels. Most flowering house plants require humidity between 40 and 60 percent. This level can be hard to obtain indoors, especially during the winter. Group several plants together to raise the humidity, as plants release moisture into the air through their leaves.
  
  Regulate the temperature to accommodate flowering house plants. Place a thermometer near plants to keep a constant watch. Keep the temperature between 65 and 75 degrees Fahrenheit during the day and between 55 and 60 degrees at night. Never allow the temperature to drop below 55 degrees or rise above 80 degrees, or the plant's growth will suffer.
  
  

Watering

• Water flowering house plants when the top inch of soil is dry. Insert a finger into the soil to the first knuckle, apply a moderate amount of water if the soil feels dry. Spread the water over the entire surface of the soil to ensure it is moisturized equally. Pouring water in a single location will cause the water to run straight through to the bottom, and the plant will not be able to absorb as much.
  
  

Fertilizing

• Feed flowering house plants once every four to six weeks during the growing season. Use a fertilizer specially formulated for house plants. Use liquid, powder or slow-release fertilizers, depending on your preference. Never fertilize flowering house plants during the winter, when they are dormant, because the plant will not benefit. To prevent root burn, always water the plant directly after applying fertilizer. Do not fertilize house plants that are dried or wilted, because they need water. Fertilizer will cause further damage.