Giant Willow Moss are: long, upright, willow-like shoots. Leaves are larger than Java or Christmas Moss. Forms dense, bushy clumps when grown underwater. Bright green, especially under strong lighting. * Temperature: 18–25°C (it prefers cooler water; above 28°C it may grow more slowly). * Light: Low to medium; stronger light gives denser growth. * CO₂: Not essential, but CO₂ makes it much thicker and greener. * Flow: Moderate water flow helps keep it clean and healthy. * Fertilizer: Regular liquid fertilizer benefits growth. * Trimming: Trim every 3–6 weeks to maintain a compact shape and prevent the lower portions from dying off.