Calamus thrive in partially submerged conditions, requiring consistent moisture and bright, indirect sunlight. Calamus prefer warm environments with temperatures between 50-90°F. Versatile in both acidic and neutral soils, calamus demand well-draining, loamy substrates. Common challenges for calamus include root rot, rust, and scale insects. Seasonally, they may need protection from extreme temperatures and reduced watering in winter, while ensuring adequate humidity and soil aeration during growth periods in spring and summer.