How to Plant Liatris Spicata

Miss Chen
Bearing spikes of fluffy, purple, summer flowers, Liatris spicata, also known as blazing star, provides its best effect in mass plantings. Hardy in U.S. Department of Agriculture plant hardiness zones 3 through 8, blazing star is a U.S. native that's also called gayfeather, snakeroot and dense blazing star. Its grass-like clumps grow 24 to 48 inches tall and 9 to 18 inches wide, and its flower spikes are 6 to 12 inches long. White, bluish and deep purple cultivars are available. A perennial plant, blazing star can be planted as a corm, which is a swollen underground stem, and also as a young plant. Blazing star flowers are attractive to butterflies.

Blazing Star Corms
Step 1

Step 1

Till moist, well-drained soil in full sun with a garden fork to a depth of 6 inches in fall or spring. Mix in a 2-inch layer of garden compost, leaf mold or other organic matter if the soil is sandy and dry.

Step 2

Scatter blazing star corms across the growing site to create an informal effect or arrange the corms in the desired pattern. Space the corms about 2 to 4 inches apart and at a rate of 10 to 20 blazing star corms per square foot.

Step 3

Dig a hole beneath a blazing star corm 5 inches deep and as wide as the corm. Place it in the hole so that the widest, flattest part of the corm lies on the base of the hole. Fill in the hole with dug soil and plant the rest of the corms in the same way.

Step 4

Water the blazing star corms thoroughly and water regularly throughout the growing season so that the soil is constantly moist but not saturated.

Blazing Star Plants
Step 1

Dig a hole as wide and deep as the blazing star root ball in a full-sun growing site with a trowel in spring. Blazing star tolerates dry, infertile soil but grows and flowers best in moist, well-drained, rich soil.

Step 2

Place a blazing star plant in the hole so that the surface of the root ball is level with the surrounding soil. Fill in gaps around the root ball with dug soil. Space blazing star plants 9 to 18 inches apart.

Step 3

Water the blazing star plants thoroughly and apply water throughout the growing season to keep the soil moist, especially when conditions are dry.

Step 4

Spread a 9-18-9 ready-to-use, slow-release fertilizer around the planting site at a rate of 1 tablespoon per square foot. Apply the fertilizer every three months during the growing season.
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