Succulents such as cacti and agaves make wonderful addition to the landscape because they supply color all year and add height to the design, according to Cathy Babcock, assistant director of horticulture at the Desert Botanical Garden in Phoenix. Bold species of succulents can complement native plants with fine leaves, while taller varieties can stand alone as a skyline silhouette. These plants need irrigation regularly and thrive well in soil with good drainage, Babcock adds.

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