The best way to care for a gardenia plant indoors is to make sure it gets sufficient light exposure and water, is potted in slightly acidic soil and is kept at the right temperature. The plant needs to be exposed to humidity during both the summer and the winter months.
A gardener needs to care for an indoor gardenia plant by potting it using a mix that has a slightly acidic pH. After the plant is potted, it needs to be placed in a location with a consistent temperature and proper humidity. The Temperature needs to range from 55 degrees Fahrenheit at night to 65 degrees Fahrenheit during the day. The gardener needs to avoid placing the plant in an area where it is exposed to cold or hot air drafts. The gardenia plant needs plenty of bright, indirect sunlight in which to grow during the summer with direct light during the winter.
The plant needs a humid environment, which the gardener can create by placing the plant's pot on a tray of wet puddles or setting up a humidifier. The gardener needs to water the plant regularly once the top 1 inch of soil feels dry. The plant also needs to be fertilized twice a week with a small amount of non-alkaline fertilizer.