From our perspective, the answer is a cautious yes, we can grow indoors. However, you must understand that this is not our natural preference. We are evergreen shrubs native to the subtropical and tropical regions of Asia and Africa. We thrive in bright, humid, and warm environments with very specific soil needs. Replicating these conditions inside a human dwelling is a significant challenge. If you are not prepared for a high-maintenance relationship, perhaps a less demanding plant would be a better choice. But for those dedicated gardeners willing to listen to our needs, the reward of our intensely fragrant, creamy-white blooms is unmatched.
Our most critical demand is for light. To photosynthesize effectively, produce buds, and sustain our deep green foliage, we require a minimum of six to eight hours of bright, indirect light daily. A south-facing window is ideal, though an east or west-facing one can suffice. Direct, harsh afternoon sun through glass can scorch our leaves, so filtered light is key. In the darker winter months, you will likely need to supplement with a grow light to keep us from becoming leggy and sad. Without adequate light, we simply will not have the energy to flower.
Your average indoor air, especially when heated or air-conditioned, is painfully dry for us. We flourish in humidity levels of 50% or higher. To make us happy, please place our pot on a pebble tray filled with water (ensure our roots aren't sitting in the water) or use a humidifier nearby. Grouping us with other plants can also create a beneficial microclimate. As for temperature, we prefer it consistently cool to moderate. Daytime temperatures between 65-70°F (18-21°C) and slightly cooler nights at 60-65°F (15-18°C) are perfect. This nighttime drop is particularly important for triggering our bud formation.
We are acid-loving plants and require an acidic, well-draining, and organic-rich potting mix. A soil blend formulated for azaleas or camellias is perfect for us. Water is a constant balancing act. Our roots despise being waterlogged, but we also cannot tolerate completely drying out. Water us deeply with tepid water when the top inch of soil feels dry to the touch. Always use room-temperature water, as cold water shocks our roots. Most importantly, if your tap water is hard or alkaline, use filtered, distilled, or rainwater to prevent the soil pH from rising, which will cause our leaves to yellow.
During our active growing season (spring and summer), we are hungry. Feed us every two to four weeks with a fertilizer designed for acid-loving plants. This provides the nutrients we need to support lush growth and prolific blooming. However, like all living things, we need to rest. In the late fall and winter, our growth slows. Reduce watering significantly and stop fertilizing altogether during this dormant period. This rest is crucial for us to gather energy for the next season's bloom cycle.