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Mountain Bluet

Centaurea montana

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verifiedReviewed by the GreenScout Team

A robust, clump-forming perennial with striking blue-purple flowers (sometimes pink or white) blooming from late spring through summer. Reaching 45–60 cm tall, it is extremely hardy, drought-tolerant, and low-maintenance. Excellent for borders and meadow gardens, it attracts pollinators and tolerates poor soil.

Common Problems

Select the problem your Mountain Bluet is experiencing to get a treatment guide.

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Overwateringchevron_right

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Underwateringchevron_right

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Leggy Growthchevron_right

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Yellow Leaveschevron_right

Care Guide

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Light

Full sun (6+ hours daily); tolerates partial shade but flowers less freely

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Water

Moderate; water regularly during establishment, then drought-tolerant. Allow soil to dry between waterings.

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Soil

Well-draining, neutral to slightly alkaline soil. Very tolerant of poor, sandy, or gravelly soils.

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Fertiliser

Minimal fertilizer required; avoid heavy feeding

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Temperature

Hardy in cold; tolerates heat; prefers cooler climates

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Humidity

Low to moderate humidity; good air circulation is beneficial

Toxicity

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Non-toxic

Common Diseases

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Common Pests

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Seasonal Care

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Resume regular watering and feeding as growth picks up.

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Peak growing season. Water and feed regularly.

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Reduce watering as growth slows. Stop heavy feeding.

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Minimal watering and feeding. Protect from frost if needed.

Frequently Asked Questions

Is Mountain Bluet related to Cornflower?

Yes — it's in the same Centaurea genus as Cornflower and Bachelor's Button, sharing a similar blue-purple flower shape but growing as a hardier, longer-lived perennial rather than an annual.

How much maintenance does established Mountain Bluet need?

Very little — it's extremely hardy, drought-tolerant, and low-maintenance once established, tolerating poor soil while attracting pollinators to borders and meadow gardens.