There are a few groups of large clumps of sedge in my garden, and in one particular spot one of the older (are they called "heads" of?) grasses got dug up, leaving a very large hole.
I dug up some sedge from another part of the garden and moved it to the hole, where it died a slow death. Another smaller piece I moved took root and is now fully in place.
Recently a much larger piece of the grass (About 80cm diameter) was not needed, so I dug that up and put it in the bare patch, which it completely filled. However, I can already see the ends of the grass going steadily whiter and I am afraid it might die there, too- why is this? And can I stop it from happening?