Posted: 13/01/2014 at 19:15
That's a pretty comprehensive answer Verdun, thank you.
My panicums seem to just fall apart at the end of the season ans I clear up with no cutting.
The Stipa gigantea seems to do OK with neglect, all other stipas have died except Stipa arundinacea which also is neglected, I treat that as a sort of bi/triennial, it seeds about, gets scruffy eventually and I discard the oldest. A bit like Helleborus foetidus.
I think I'll experiment with the miscanthus, cut some this week and leave the rest for a while. One of them hasn't had last spring's cut yet.