Thats the way it seems to be in my tank. I recently bought about 7 inches of rhizome for 3 dollars out of a box of mixed plants. I cut it in two, with the smaller piece in my ten gallon heterandria formosa tank. The other one ended up in my 46 gallon bowfront, which is not a "planted" tank yet(30 watts on a 3 year old bulb). I have a normal java fern attached to a piece of drfitwood that is just doing nothing(except growing more rhizome and producing some slightly smaller leaves). The Windelov, however, is also producing tons of baby plants on its leaves. Is something wrong with the plant? The small baby plants are growing on the laced part of the leaf.