For a fast growing ground cover that has nice spring pop up flower stalks, try Ajuga
Ajuga, Carpet Bugleweed Ajuga reptans
Ajuga is a good ground cover, forming a dense carpet of foliage over the soil. This semi-evergreen plant grows rapidly by producing mats of foliage in rosettes. As runners develop from the mother plants, take root, and produce new plants, it can become invasive. (Low)
The foliage grows about 4 inches high with upright clusters of blue flowers reaching 6 to 8 inches. The plant flowers in early May to mid-June. Ajuga will flourish in almost any soil with good drainage. It grows best in full sun, but also tolerates shade.
The foliage is deep green in color and partly evergreen, turning brown after severe freezing weather. Bronze and variegated varieties are also available. The extensive root system prevents soil erosion.
If established plants are set 12 to 15 inches apart in the spring, they will cover the soil in one growing season. Do not set the plants too deep. The crown should never be covered. In the spring or early fall, rooted "runner plants" can be dug from established plantings and replanted elsewhere.