WHAT IT TAKES
TIME: 4 hours
SKILL LEVEL: Beginner
Life on the street is tough on plants, too. They must survive exhaust fumes, heat and light reflected from the pavement, cramped roots, and winter road salt. In these areas, start with street-tough plants such as salvia, ornamental oregano, cranesbill geranium and sedum. But even these plants benefit from some extra attention.
Enriching the soil quality is essential. Do this by elevating the bed with timbers and adding a 3-in.-thick layer of mulch to conserve soil moisture and protect roots. Water these plants frequently and deeply. Also, hose off the foliage to remove dust, soot and salt, being sure to spray even the underside of the leaves.