The rubber tree plant originates from India, but can be grown anywhere in the world indoors or in a greenhouse. The plant has large leaves ranging in sizes up to 8 inches long. To care for a rubber tree you need to know the correct amount of watering, light, humidity, as well as the temperature the plant plant prefers in order for it to thrive.
Place the rubber tree in a location that has indirect sunlight, but is bright enough for the plant to thrive.
Monitor the room temperature. Keep the room temperatures between 60 and 85 degrees F. A warmer temperature during the day is ideal, while the night temperatures can be a bit cooler.
Place gravel in the drainage tray to collect excess water. The standing water in the tray will provide the humidity that the rubber tree needs.
Water the plant. Use warm water to keep the soil slightly moist. The plant will do well with one watering every two weeks depending on the temperature in the room. The soil should be moist but not wet. Soggy soil will promote root rot.
Fertilize the plant during the spring and summer every two weeks with a 10-10-10 fertilizer, which provides equal parts of potassium, phosphates and nitrogen. Do not fertilize during the fall and winter months.
Remove pests. Use a mild soapy solution and a washrag. Wipe the leaves down to remove thrips, scale, mealy bugs and white flies. Make sure to get underneath the leaves. Use a damp washrag once a month to clean the leaves and keep them free of dust.