I guess it depends on the lighting. I wish they stayed 3" in my tank, that would be perfect!I got some Dwarf Saggitaria from Johnny 313 and so far the largest of the plants has leaves that are around 6" long, but they curl down towards the substrate, so the overall height of the plants in the tank is no more than 3". Good plants though, the ones he sent me have almost carpeted the whole front of my tank now![]()