Ludwigia tornado help

[Cristy Keister]

It's not branching out. I started with 2 stems and still have 2 stems and a stump where I cut one 2 weeks ago. The tops are growing (green, not red), but it would be nice to grow more than 2 stems.

Is this normal for this plant?

[Ghazanfar Ghori]

Let it float for a week or so..