Level out a 36-inch diameter circular area in the garden.
Bend a piece of flexible lawn edging into a 36-inch diameter circle, connecting the ends with lawn edging connector clips.
Place the edging ring onto the leveled ground and fill the edging ring’s interior with potting soil.
Bend a second piece of edging into a 24-inch diameter circle, place it centered on top of the soil in the 36-inch circle and fill with potting soil
Make a 16-inch and 8-inch edging ring, so you have a round pyramid strawberry bed, four tiers tall.