Isotoma fluviatilis (syn. Laurentia fluviatilis) - Blue Star Creeper

A beautiful, matted groundcover with masses of sky blue flowers in late spring; good for moist boggy sites; this variety maintains a low, even form throughout the season; tolerates foot traffic, great for between pavers, or as a lawn substitute

Height: Plant Height: 1 inch. Sun: full sun to partial shade. Hardiness zone: 6a.

Ornamental features

Blue Star Creeper has masses of beautiful sky blue star-shaped flowers along the stems from late spring to late summer, which are most effective when planted in groupings. Its tiny pointy leaves remain green in color throughout the year.

Landscape

Blue Star Creeper is an herbaceous evergreen perennial with a ground-hugging habit of growth. Its medium texture blends into the garden, but can always be balanced by a couple of finer or coarser plants for an effective composition.

This is a relatively low maintenance plant, and is best cleaned up in early spring before it resumes active growth for the season. It is a good choice for attracting bees and butterflies to your yard, but is not particularly attractive to deer who tend to leave it alone in favor of tastier treats. Gardeners should be aware of the following characteristic(s) that may warrant special consideration;

Recommended for: Mass Planting, Border Edging, General Garden Use, Groundcover, Container Planting.

Planting and growing

Blue Star Creeper will grow to be only 1 inch tall at maturity extending to 2 inches tall with the flowers, with a spread of 18 inches. When grown in masses or used as a bedding plant, individual plants should be spaced approximately 10 inches apart. Its foliage tends to remain low and dense right to the ground. It grows at a fast rate, and under ideal conditions can be expected to live for approximately 5 years. As an evegreen perennial, this plant will typically keep its form and foliage year-round.

This plant does best in full sun to partial shade. It prefers to grow in average to moist conditions, and shouldn't be allowed to dry out. This plant should not require much in the way of fertilizing once established, although it may appreciate a shot of general-purpose fertilizer from time to time early in the growing season. It is not particular as to soil pH, but grows best in rich soils. It is somewhat tolerant of urban pollution. This species is not originally from North America, and parts of it are known to be toxic to humans and animals, so care should be exercised in planting it around children and pets. It can be propagated by division.

Photo courtesy of NetPS Plant Finder.