How to Water Cape thatching reed?
Moderate regular watering, avoid prolonged drought or waterlogging

Cape thatching reed · Elegia tectorum
Grow in moderately fertile, moist but well-drained preferably acid soil in full sun but tolerates alkaline soils. Grow under glass where temperatures fall below -5°C, in loam-based (JI No2) potting compost in full light. When in growth maintain low humidity and water sparingly in winter
Moderate regular watering, avoid prolonged drought or waterlogging