arrowleaf

These cuttings I've simply been growing in a vase of water for months now. When the roots get long enough to coil around the bottom of the vase, I trim them back.

And once a week tip out all the water, give them fresh (fish waste water). That's it.

In the last pic here you can see a new green shoot growing up, from under the water! If I ever do have a paludarium, this plant will be a main feature in it I'm sure.