Looks like adult Nutsedge,which is considered a nuisance for lawns. The
fernlike appearance are actually seeds.

"David Pear" wrote in message
...
I bought what I thought was Pompas Grass. But, it started getting these
fern-like growths. What I want is those big beautiful blooms - but I don't
think it's going to happen with this plant. Let me know if anyone has any
experience with this kind of plant.

See pictures he
http://webpages.charter.net/dwpear/strangegrass.jpg