Blazing star (Liatris spicata 'Kobold Original')

Overview

The compact cultivar Liatris spicata ‘Kobold Original’ offers gardeners the strong vertical accent typical of Blazing star, but in a more manageable size, reaching barely 1.5 feet tall. This herbaceous perennial creates striking architectural interest with its dense spikes of deep purple flowers that appear reliably mid-summer. Grown for its showy blooms, this variety of Liatris spicata is extremely valuable for borders where height might otherwise be a concern.

This desirable version of Blazing star thrives when planted in full sun, providing excellent structure and vibrant color late into the season. It is generally considered a low-maintenance selection, making it a favorite for busy gardeners seeking high impact with minimal fuss. Furthermore, the flowers of Liatris spicata ‘Kobold Original’ are known attractants for hummingbirds and butterflies, significantly boosting its ecological value.

A key advantage of selecting Liatris spicata ‘Kobold Original’ over the standard species is its consistent, shorter stature; unlike some relatives, this cultivar is known for its reliable dwarf habit. It establishes from tubers and brings reliable, late-season vertical drama to perennial beds, thriving even in challenging clay soils.

Fast Facts

• Plant Family: Asteraceae
• Plant Type: Herbaceous perennial
• Hardiness Zones: USDA Zones 3-8
• Size at Maturity:
  • Height: 0.75-1.5 ft
  • Spread: 0.5-1 ft
• Bloom Time: July to August
• Bloom Description: Deep purple
• Sun Exposure: Full sun
• Water Needs: Medium
• Maintenance Level: Low

How to Grow

For optimal performance, plant Liatris spicata ‘Kobold Original’ tubers in the spring after the danger of hard frost has passed. Choose a location that receives full, uninterrupted sun throughout the day, as insufficient light can cause floppiness and poor flowering. While easily grown in average, well-drained soils, this plant prefers moist, fertile conditions compared to other Liatris species.

Water Liatris spicata ‘Kobold Original’ deeply when the top inch of soil feels dry, maintaining medium moisture levels during the primary growing season. Although it is somewhat tolerant of clay soils, excellent drainage is crucial, especially during winter; this perennial is intolerant of wet soil conditions in winter months. Fertilization is rarely required if the soil is rich, but a balanced, slow-release fertilizer applied in early spring can benefit performance.

Maintenance for this Blazing star is decidedly low once established. Deadheading is generally unnecessary as the flower spikes are tidy, though spent flower stalks can be cut back in autumn or early spring. Be aware that while seeds can be collected, Liatris spicata ‘Kobold Original’ does not reliably come true from seed, meaning propagation is best achieved via division of tubers.

Landscape Uses

The upright habit of Liatris spicata ‘Kobold Original’ makes it an indispensable tool for adding vertical contrast in mixed plantings. Mass plantings in perennial borders create dramatic visual impact, drawing the eye upward between shorter mounding plants. This compact Blazing star is perfect for cottage gardens or native plant gardens where vertical elements are desired without towering over surrounding flora.

Because they offer excellent dried flower material, consider placing them near work areas for easy harvesting. They integrate seamlessly into prairie-style plantings, evoking the natural areas where the taller species originates but remaining garden-friendly. The intense deep purple of Liatris spicata ‘Kobold Original’ contrasts beautifully with yellow daisies, silver foliage, or blue salvias.

Standout Features

Flower Qualities

• Showy
• Good Cut
• Good Dried

Noteworthy Characteristics

Liatris spicata typically features terminal spikes bearing fluffy, deep purple flower heads that attract songbirds, hummingbirds, and butterflies. While the species can reach 4 to 6 feet, the ‘Kobold Original’ cultivar is valued specifically for being a very compact, tuberous-rooted perennial, usually topping out around 14 inches tall. This dwarf form allows gardeners to incorporate the reliable summer bloom of Blazing star into smaller spaces where the towering species would be overwhelming.

Tolerances

• Clay Soil

Potential Problems

This perennial exhibits exceptional durability, generally experiencing no serious insect or disease problems in well-managed garden settings. Good garden hygiene, primarily ensuring the plant does not sit in soggy winter soil, is the best preventative measure against root issues. If powdery mildew appears during humid summers (though less common on this variety), improve air circulation by spacing plants appropriately.

Frequently Asked Questions

What hardiness zones is Blazing star suitable for?

Liatris spicata ‘Kobold Original’ is reliably hardy across USDA Zones 3 through 8.

How large does Liatris spicata ‘Kobold Original’ grow?

This compact cultivar typically reaches 0.75 to 1.5 feet in height with a spread between 0.5 and 1 foot wide.

What sun exposure does Blazing star need?

Liatris spicata ‘Kobold Original’ requires full sun exposure to achieve its best structure and flowering potential.

When does Liatris spicata ‘Kobold Original’ bloom?

This specific Blazing star features its signature deep purple flower spikes from July through August.

Conclusion

The short stature and vibrant, mid-summer color make Liatris spicata ‘Kobold Original’ an exceptional choice for reliable vertical accents in almost any garden space, readily tolerating clay soil. By incorporating this low-maintenance Blazing star, you ensure consistent pollinator attraction and excellent material for dried arrangements. Check your local USDA zone compatibility before planting tubers this spring to incorporate this compact beauty into your design.

Wildlife Benefits

The blooms of Blazing star are a magnetic feature for local ecosystems, providing crucial late-season nectar sources when many spring bloomers have faded. Hummingbirds are highly attracted to the deep purple, nectar-rich flowers of Liatris spicata ‘Kobold Original’. Butterflies and various beneficial insects also consistently visit the flower spikes throughout July and August.

Once flowering concludes, the small seeds produced by the mature plants provide a valuable food source for seed-eating songbirds. Planting Liatris spicata ‘Kobold Original’ in masses not only creates a stunning visual flow but also establishes a reliable foraging area for local wildlife throughout the growing season.

Companion Planting Ideas

Due to their similar requirements for full sun and medium moisture, Liatris pairs beautifully with many herbaceous perennials common in mixed borders. For complementary texture, plant Liatris spicata ‘Kobold Original’ near fine-textured ornamental grasses, which sway gently around the stiff vertical spikes. Silver-leaved plants, such as Lamb’s Ears (Stachys byzantina) or certain artemisias, provide a lovely color contrast against the deep purple blooms.

Consider placing them alongside plants that bloom earlier or later to maximize season-long interest in the border. Early-summer bloomers like Siberian Iris or late-season asters provide a continuous show flanking the mid-summer peak of this Blazing star cultivar. Ensure any chosen companion plants share the full sun requirement to keep the clump-forming Liatris spicata ‘Kobold Original’ looking its best.