Does it need staking?

Usually not, as the stems are quite sturdy.

Can I grow it in a pot?

Yes, it does well in deep containers with good drainage.

Plant guide

Blazing star.

Liatris spicata

Pronounced ly-AY-tris spy-KAY-tuh

Also known as Blazingstar, Button Snakewort, Dense Blazing Star, Florist Gayfeather, Florist Or Marsh Gayfeather, Gayfeather, Marsh Blazingstar, Marsh Gayfeather

Blazing star is a stunning perennial that sends up tall, fuzzy purple spikes in the summer. It's a favorite for pollinators like butterflies and bees. You'll love how these vertical accents look in a sunny garden border.

At a glance

Care level: Easy
Plant type: Perennial
Light: Full sun
Indoor light: Direct sun
Water: Every 7 to 10 days
Mature size: 2 to 4 feet
Growth rate: Medium
Hardiness: USDA 3 to 9
Bloom time: Mid to late summer

Care

Plant these in well draining soil to prevent the corms from rotting. Keep an eye out for powdery mildew if the air circulation is poor. Deadhead the spent flower spikes to keep the plant looking tidy.

Watering: Water consistently during the growing season but ensure the soil does not stay soggy.
Feeding: Apply a balanced fertilizer once in early spring as new growth emerges.
Pruning: Cut the foliage back to the ground in late autumn or early spring.
Repotting: Divide the corms every few years to maintain plant vigor and prevent overcrowding.
Soil: Well draining sandy or loamy soil
Soil pH: 6.0 to 7.5
Temperature: -30 to 35°C
Humidity: 40 to 70%
Drought tolerance: Moderate
Lifespan: Perennial, typically 5 to 10 years
Fragrance: Light
Deer and rabbits: Moderate

Signs it needs repotting

Roots growing out of drainage holes
Stunted growth
Water draining too quickly

Safety

People: The plant is generally considered non-toxic to humans.
Children: There are no specific safety concerns for children, but it is always best to discourage ingestion of garden plants.
Contact allergens: Handling the foliage may cause mild skin irritation in sensitive individuals.
Airborne allergens: The pollen can trigger mild reactions in those with seasonal allergies.
Edibility: This plant is not considered edible for humans.

How to identify it

Tall spikes of purple flowers
Grass like basal foliage
Flowers bloom from top down
Clump forming growth habit

Height: 0.6 to 1.2m
Spread: 0.3 to 0.45m
Leaves: green, deciduous
Flowers: purple, white, 1 to 2cm

Problems to watch for

Powdery MildewCommon
RodentsCommon
Leaf SpotUncommon
Root RotUncommon

By symptom

Plant problems by symptom

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Growing it

Propagation: division, seed
When to plant: spring, autumn
Overwintering: Cut back the dead foliage to the ground in late autumn or early spring. Ensure the soil is well-drained to prevent the corms from rotting during wet winters.
In containers: It grows well in containers at least 30 cm deep to accommodate the corms.

Division

1. Dig up the clump in early spring.
2. Carefully separate the corms.
3. Replant immediately at the same depth.

Plant in groups of three or more to create a strong visual impact and attract more pollinators.

Grows well with

Purple Coneflower · They share similar light and water requirements.
Black Eyed Susan · The yellow blooms contrast beautifully with the purple spikes.

Similar species

Liatris pycnostachya · It has a similar appearance but prefers slightly drier soil.

Science

Family: Asteraceae
Genus: Liatris
Order: Asterales
Class: Magnoliopsida
Native range: Eastern North America
Conservation: It is not currently listed as endangered, though wild populations should be respected.

It thrives in moist prairies and meadows where it competes for light with grasses.

Value to wildlife: nectar source, pollinator magnet
Pollinators: bees, butterflies, hummingbirds
Uses: pollinator garden, cut flower, prairie restoration, border plant

Through the year

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Flowering

Fruiting

Foliage

Ecological indicators

Salinity: 2/9
Soil reaction: 5/9
Light: 8/9
Temperature: 5/9
Moisture: 6/9
Nutrients: 5/9

Taxonomy resolved against GBIF.

Questions people ask

Does it need staking?: Usually not, as the stems are quite sturdy.
Can I grow it in a pot?: Yes, it does well in deep containers with good drainage.

Where the name comes from

The genus name Liatris is of uncertain origin, while spicata refers to the spike-like arrangement of the flowers.

Good to know

It is commonly called blazing star.
The roots are actually corms.
It is a favorite of the monarch butterfly.

Keep your blazing star growing

This page is a general guide. Save your plant in Pocket Botanist and you get care reminders timed for this plant, plus a care history that shows what worked.

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This guide was generated with AI on September 26, 2026 and checked against GBIF taxonomy. It is general information, not horticultural or veterinary advice. Read about how we build these guides.