Fill in tight spots between rocks with flowering plants to add a dash of color and give the rock garden a finished look. Saxifraga is an easy-to-grow crevice-dweller that grows naturally in mountain regions; here, its cheerful pink blooms complement the warm tones of the surrounding boulders./
Designing with Succulents A rock garden can give a diminutive succulent a place to shine. Here, hens-and-chicks tucks into a rocky crevice and stands out from the rocky site with its contrasting green and red hues. Although succulents may look fragile, they can thrive in intense sun and do well in dry conditions with little maintenance.