'There are a variety of materials you can use to edge your flower bed, such as stones, bricks, metal, or plastic,' says Candace Shah, a gardener and landscaper based in Richmond Virginia. 'Consider the style of your garden and choose a material that complements it.'
If you have a patio nearby, think about choosing an edging material that's the same color as the paving for a cohesive look. Alternatively, corten steel is a popular choice for modern backyards for its durable nature, industrial aesthetic, and warm-toned patina.
If you're creating an edge between a lawn and a flower bed, you could opt for a flat 'mowing strip' using pavers, which makes mowing around the area easier.