
Ruellia brittoniana is one of the first plants Hydrophyte sent me when I started an riparium. It was my favorite for quite a few weeks. But, then some of its bad habits began to show up - like a visitor who stays a little too long?
Its positives:
Very attractive leaves and it has a stem like a miniature palm tree.
Grows fast and doesn't need special care.
Has very nice blue flowers, giving you surprises when you least expect them.
Grows both in a nano raft and a planter cup.
Negatives:
Grows fast, to the point where the "palm tree" top gets up to a foot across, if not more.
In a raft it gets so top heavy it can topple the raft.
But, worst of all, it makes lots and lots of seeds, and they all sprout. I have tiny Ruellia plants on the substrate of the tank, on the hardscape of the tank, growing on the filter and on submersed plant leaves, in all nearby planter cups, and I suspect soon on top of my head! The tiny seedlings aren't bad looking, and don't grow up very soon, but there are just so many of them.
I think a good practice with this plant would be to keep an eye on it and prune off all seed pods while they are still green. I still like the plant, but is isn't my favorite now.