Slots

These planting slots, like lines drawn in the sand, mark the boundary between a driveway and an entry walk in front of a Phoenix house. Lines etch the paving as well; to create them, the designers pressed pieces of rebar and all-thread rods into the poured-in-place concrete before it hardened. Sunny-hued angelita daisies, chosen because they can take the considerable reflected heat, fill the slots.

Design: Colwell Shelor Landscape Architecture, Phoenix (colwellshelor.com)