Persian Shield (Strobilanthes Dyerianus)

The secret to keeping that brilliant purple color is getting the light just right. It thrives in bright, indirect light or dappled morning sun. If it gets too much harsh, direct afternoon sun, the delicate leaves will scorch and the vibrant purple will fade to a washed-out silvery gray. Conversely, if it is placed in too much shade, the plant will lose its purple iridescence and turn entirely green to maximize chlorophyll production. An east-facing window is usually the sweet spot.

This plant loves moisture. Keep the soil evenly and consistently moist, but never soggy or waterlogged. Water thoroughly when the top 1 to 2 inches of the soil feels dry to the touch. It is a thirsty plant, especially during the warm growing season, so you may find yourself watering it more frequently than your aroids or succulents. Reduce watering slightly in the winter, but never let the root ball completely dry out.

Hailing from tropical Asia, the Persian Shield thrives in high humidity. Aim for 50% humidity or higher. If your indoor air is too dry (especially in air-conditioned rooms or during winter heating), the leaf tips will quickly turn brown and crispy. Group it with other plants, place it on a pebble tray filled with water, or use a humidifier to keep its leaves looking flawless.

It prefers a rich, well-draining potting mix that holds onto moisture without turning into mud. A high-quality general indoor potting soil mixed with a generous handful of perlite or pumice to ensure the roots can breathe is perfect. Adding a little bit of compost or worm castings will provide the rich organic matter it naturally prefers.

Because it grows so fast, it appreciates regular meals during the spring and summer. Feed every 2 to 4 weeks with a balanced liquid fertilizer diluted to half strength. Avoid using fertilizers that are overly high in nitrogen; while nitrogen promotes leafy growth, too much of it will cause the plant to produce green leaves rather than its signature purple ones.