No, bears don’t eat it. And it isn’t a grass (it’s in the lily family). It is native to the greater Pacific Northwest (i.e., including Canada and Montana, etc.) and was apparently named by Lewis & Clark.
It grows in the mountains - the coast range, Cascades, and Rockies - and has always been a welcome sight to me on my hikes. Its stem is very tough and the Native Americans used it for weaving baskets and other things that needed tough fibers. I have a vague recollection of having used it for shoe inserts on a backpacking trip once.
It should be in bloom right now, but everything is late this year because of a cold, snowy spring. In my local area, you can’t even get onto the trails yet because they’re still snowed in. So do watch for it while you’re out hiking.