Belgian Tumbled Edger
We utilize these as needed on essentially linear (straight lined beds) beds.
They measure 4 1/2″ x 12″ x 3 1/2″ and are made of concrete. They work nicely when you are after a more stylish edge than that of plastic edging. They come in (4) colors which are represented below as: Autumn Blend, Quarry Gray, Sienna, and Tan. Note: heavy riding lawn mowers can alter or move these over time.
Interloc Edgers 3-3/8″ x 12″ x 3-3/8″
We also utilize these types of concrete brick edgers. They are essentially what we go to if the bed is going to have some curvature to it. The colors represented below by the pictures are: Gray, Red, Red/Black, and Tan.
Note: these can be damaged by riding lawn mowers as well.
Tumbled pavers add class and maintain that rustic feel. Here is a link to a local provider of pavers Outdoor Solutions and the parent company Belgard which manufactures them. Be sure to look through Belgards web site. You will fins a wealth of useful ideas and information.