Rowan likes
Light watering
Rowan won't thank you for watering him too much. Just give him a drink when the top inch of his soil feels dry.
Bright light
Ming aralia like a lot of bright, but not direct, light. A shielded position near a window in a south-facing room would be ideal.
Humidity
He may not like his soil wet but he loves a bit of humidity. Mist him regularly or let him live in a bright bathroom.