what direction is the window that illuminating it? Could be a fun to try and grow one but in a more conventional pot.
It would be close to East-SouthEast, the back panel wall points East... It takes to 11 AM to get the first sun rais till about 4.30 PM...
It indeed is a nice pot plant to grow and relatively undemanding to grow in tall proportions... I never grew this plant before initially I planted the Mexican dwarf Cyperus in that spot. That obviously had some Papyrus in it or at least a seed. It took off and outcompeted the dwarf cyperus completely. Now I trimmed 40% off and it still is an impressive plant.