RECOMMENDED USDA GROWING ZONES: 3–9
1. Choose the right location
Choose a location with full sun and well-drained soil. Purple Blazing Star performs best with at least 6 hours of direct sunlight each day and develops its strongest flower spikes in open, sunny locations.
Liatris works especially well in perennial borders, pollinator gardens, prairie-style plantings, and mass plantings. Mature plants produce upright flower spikes above narrow, grass-like foliage, allowing them to add height without taking up excessive garden space.
2. Prepare the soil
Loosen the planting area and remove weeds, rocks, and other debris. Liatris adapts to a range of soil types, but good drainage is especially important. Avoid low areas where water regularly collects, particularly during winter dormancy.
Heavy or compacted soil should be improved before planting so excess water can drain away from the corms. Once established, Liatris can tolerate periods of relatively dry soil.
3. Plant the corms
Plant Liatris corms in spring after the soil becomes workable, or in fall where local conditions allow adequate establishment before winter.
Plant each corm approximately 2–3 inches deep and space them about 6–8 inches apart. Position the corm with its flatter or slightly hollowed side facing upward and the roots or basal side facing downward. If the orientation is difficult to determine, planting the corm on its side is preferable to forcing an uncertain orientation.
For a stronger visual display, plant several corms together in groups or drifts rather than scattering individual plants widely throughout the garden.
After planting, gently firm the soil and water thoroughly to settle the soil around the corms.
4. Water and care for your Liatris
Keep the soil evenly moist during initial growth and establishment, but never continually saturated. Once plants are established, allow the soil to begin drying between waterings.
Liatris is relatively drought tolerant once mature and generally requires little supplemental water under normal garden conditions. Excessive watering is more likely to cause problems than moderately dry soil.
Avoid excessive fertilizer. In reasonably fertile garden soil, Liatris usually needs little additional feeding, and overly rich conditions can encourage weak growth.
5. Enjoy the flowers and prepare for dormancy
Purple Blazing Star typically flowers in mid to late summer, producing tall spikes densely covered with small purple flowers. Unlike many spike-forming flowers, Liatris blossoms characteristically begin near the top of the spike and progress downward.
The flowers attract butterflies, bees, and other pollinators and can also be cut for fresh or dried arrangements.
After flowering, spent flower stalks can be removed for a tidier appearance, or left in place to provide seed for birds and additional winter interest.
Allow the foliage to remain until it naturally yellows and dies back. While green, the leaves continue supplying energy to the underground corms for the following growing season. Once the foliage has completely died back, it can be cut to ground level.
Established Liatris can gradually develop into larger clumps. If plants become crowded after several years, clumps can be lifted and divided while dormant.
Growing Purple Blazing Star in containers:
Choose a substantial container with drainage holes and fill it with a well-drained potting mix. Plant the corms approximately 2–3 inches deep and place the container in full sun.
Container-grown plants may require more frequent watering than plants growing in the ground, but do not allow the potting mix to remain saturated. In colder climates, containers may also require additional winter protection because the corms receive less insulation than they would in garden soil.
