These are supremely simple-to-grow plants that don't get too tall, spread wide, and are often used for low-maintenance ground cover plants. Their silvery or blue-green color fades to more of a soft green as the plants mature, and they play an effective, understudy role in landscaping often surrounding a focal point such as a showy palm or small flowering tree. Builders landscape many new homes in Florida with these plants because of their hardy nature and easy of care.