How to Water Indian grass?
Moderate regular watering, allowing brief slight drying between soakings

Indian grass · Molinia caerulea
Also known as: lavender grass; purple moor-grass
Will grow in full sun or part shade in any moderately fertile, moist but well-drained soil, but prefers neutral to acidic soil. See ornamental grasses cultivation
Moderate regular watering, allowing brief slight drying between soakings