I've grown Ruellia tuberosa in my garden, and it can indeed thrive with minimal care. It prefers full sun to partial shade, and it’s quite drought-tolerant once established, though regular watering will encourage better blooms. As for its invasiveness, it's known to spread fairly easily due to its explosive seed pods. To control its growth, regularly deadhead the flowers before seeds form and consider planting it in a contained bed or using barriers. Staying vigilant with these practices can help manage its spread. If you're looking for a tough, colorful plant, it can be a good choice with some attention to its growth habits. You might also want to check local regulations, as it can be considered invasive in certain regions.
