Kalimeris incisa 'Blue Star' (Japanese Aster 'Blue Star') is a dependable, easy-care perennial that brings a soft haze of pale blue, daisy-like flowers with yellow centers to your garden over a long season. It forms a tidy, clumping to mounding plant with dark green foliage that looks light and airy in mixed beds. At maturity you can expect it to stand about 12 to 24 inches tall, with a similar spread, making it a great fit for borders, cutting gardens, and small group plantings.

For best flowering, grow it in full sun, though it will also tolerate part shade. Plant in average, well-drained soil and water regularly as it establishes; once settled in, it can handle short dry spells, but performs best with consistent moisture during hot summer stretches. If stems start to relax, a light midseason trim can help keep the plant compact and encourage fresh growth.

Deadheading or shearing spent blooms can extend flowering and may encourage additional bloom later in the season. Every few years, divide mature clumps to refresh vigor and expand your planting. Use it where you want a long-blooming, cool-toned flower that pairs easily with warm yellows and oranges, ornamental grasses, and other summer perennials.

Specifications

• Cold hardiness zone: 5-9 (-20 degrees F) - Contact your local extension to confirm hardiness if you are in a fringe zone (we cannot guarantee hardiness in fringe zones)
• Light: Full sun   Part sun
• Mature height: 12-24"
• Spread: 12-24"
• Tolerant of: Drought, Rabbits
• Attracts: Butterflies
• Long bloom time: Yes

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