Blue Star Creeper, Isotoma fluviatilis, is a mat forming groundcover with abundant blue flowers that persist through a long season of spring and summer. Its star-like blooms look dainty, but this is a tough little plant. Highly versatile it can be grown in full or part shade. It's an ideal groundcover for small spaces, rock gardens and containers. Blue Star Creeper can even be planted between stepping stones and will bounce back from foot traffic. Make sure it gets enough water to get established and it will need little extra care thereafter.