Shade Gardening: Late emerging companion to Trilliums? , 3 by Weerobin

Weerobin wrote:
Hostas are the usual plant used for that strategy - works well.
Some of the astilbe varieties are fairly late blooming. Ligularia & bottle gentian are summer bloomers.
Tricyrtis certainly would work, unless you've got bunnies.
Have you considered some of the shade-loving grasses which carry beautiful foliage all summer long.
Here are a few: #1 hakonechloa All Gold. #2 a white-striped liriope. #3 a golden liriope (PeeDee Ingot) shown next to some mondo grass for contrast.