Generally, green plants require bright light, though not direct sun. Proper watering keeps the soil moist enough to supply the plants' needs without drowning the roots. Proper pot drainage is critical. All the soil in a pot should be thoroughly wetted each time the plant is watered. Always empty the drainage water from the catch basin after each watering. to reduce the possibility of waterlogged soil and prevent dissolved salts in the water from being drawn back into the soil. Many brands of fertilizers are designed for house plants. Follow the manufacturer's directions; overfeeding may damage your plants. Note that some plants, such as the dieffenbachia, are toxic to cats