The willow expandable crown edging is a bit expensive, but it's attractive and works well. It's better made and I think stronger than the one other similar version, which now seems to be out of stock everywhere.

Chose this product because I needed something to keep a small terrier out of my garden. I had to order a few in the taller height because this little guy could jump over this one. Very easy to install and the product looks great and blends in very well with my landscaping.