A cold-water moss that grows slowly without co2. It's great when creating moss trees especially if you want the "willow tree" look which is how it got it's nick name. If using co2 you'll notice the moss grows at a faster speed and becomes a lush green! You can still achieve this without co2 but it takes a while. Willow moss looks best attached to wood and it's recommended to use glue as tying it can cause breakage and you'll end up with pieces floating everywhere. My RCS love it and I love my little willow moss tree!
Slowest moss I have ever had. It is a really neat kind of corse. It's Steam is kind of hard I found that made using string to tie it was not easy. Once it starts to grow it's very pretty and will grow downward weeping.