Daylilies around garden for edges?

I'm debating how to maintain the edges of my vegetable garden (just moved here last summer so old garden, new to me). I was thinking of getting one of those step-on edging tools and just chopping around the edges once a week or so. The alternative is, there are tons of daylilies in the flower border at the front of the house that my dogs are destroying (they decided that's the best place to sleep!). I could probably dig them and plant a row of them along the edge of the vegetable garden.

Has anyone used daylilies for a garden edge? Do they hold back grass pretty well? I've never eaten daylilies but a friend from China introduced me to "dried vegetables" which are salty brown things that are DELICIOUS in soups or stir-fries. She said they're daylilies that are salted and left to dry in the sun. So now I'm getting more interested in daylilies.

My old garden had an herb border, and it was hard to keep under control - the oregano kept creeping into the veggie area.

I want to know more about the salted and dried daylily (flowers and buds?). We eat the buds every spring and a few flowers but would love to try drying them. Ours are in huge patches at an old house site on our land and they do seem to keep other things at bay. They are so thick that they don't always bloom well so sometimes I mow back the leaves which are nice for mulch. They don't seem to spread very fast so I guess I would plant them thickly for quick weed suppression. Good idea.

Here are some links to day lily tuber recipes:

This one has recipes for day lily tubers, fiddleheads, ramps and Jerusalem Artichokes
City Market/Onion River Co-Op

HonestFoodNet

Enjoy