Not readily available, but beautiful. Wildflower garden. Retain if in the landscape.

This is a sedge and not a grass, but it does have a grass-like growth form. Useful in ponds to provide cover for wildlife and water quality treatment. Good in stormwater ponds.

The bloom period is relatively long - lasting from early spring, well into fall. Wildflower garden.

Known for very dense wood, hence the common name.  Said to have the heaviest wood on any American tree. Specimen plant or small shade tree.