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1.Bluebeard — Overview
Caryopteris x clandonensis, commonly known as Bluebeard, Blue Mist Shrub, or Blue Spirea, is a captivating deciduous shrub prized for its vibrant, late-season blue flowers. This fascinating plant is a hybrid cross, resulting from the careful selection and breeding of two distinct species: Caryopteris incana (often called common bluebeard) and Caryopteris mongholica (Mongolian bluebeard).
Belonging to the Lamiaceae family, which also includes mints and sages, it shares the characteristic aromatic foliage common to many of its relatives.
Morphologically, Caryopteris x clandonensis typically forms a low, mounding shrub, reaching an average size of 2 to 3 feet in both height and width, presenting a medium to fine texture in the landscape. Its leaves are simple, oppositely arranged, and ovate, often displaying a grayish-green hue, which further enhances its ornamental appeal. The most striking feature, however, is its profusion of bright blue, sometimes violet-blue, flowers that emerge in late summer and continue into early autumn.
These blooms are borne in axillary inflorescences, creating a fluffy, cloud-like appearance, hence the 'Blue Mist' common name. Each small flower often features an elongated, beard-like base petal, a distinguishing characteristic. While primarily an ornamental hybrid, its aromatic nature and floral display contribute to its unique botanical profile.
It thrives in full sun and well-drained loamy soil, demonstrating good drought tolerance once established, and provides a crucial nectar source for pollinators during a time when many other plants have finished blooming.
Trusted Scientific References
1. Authoritative external sources for Caryopteris clandonensis
1.1 Wikipedia — Caryopteris clandonensis
1.2 Kew POWO (Plants of the World Online)
1.3 PubMed — peer-reviewed research
1.4 NCBI Taxonomy Browser
1.5 GBIF — Global Biodiversity
1.6Caryopteris Clandonensis should be interpreted through verified botanical identity, practical care, and responsible safety language. This recovery note adds the missing context needed for a complete profile: match light to the plant's habit, use well-drained soil, water according to season, and avoid unsupported medicinal or edible claims. For publishing, the plant can be presented as a source-backed garden plant with clear care guidance, common problem diagnosis, and conservative safety wording.
1.1.Bluebeard — Key Features
- ✓ <strong>Scientific Name</strong> — *Caryopteris x clandonensis*
- ✓ <strong>Common Names</strong> — Bluebeard, Blue Mist Shrub, Blue Spirea
- ✓ <strong>Family</strong> — Lamiaceae (Mint Family)
- ✓ <strong>Hybrid Origin</strong> — A cross between *Caryopteris incana* and *Caryopteris mongholica*
- ✓ <strong>Flower Color</strong> — Vibrant blue to violet-blue
- ✓ <strong>Bloom Time</strong> — Late summer to early autumn (August-October)
- ✓ <strong>Foliage</strong> — Deciduous, aromatic, often grayish-green, ovate leaves
- ✓ <strong>Growth Habit</strong> — Low-mounding shrub, typically 2-3 feet tall and wide
- ✓ <strong>Pollinator Attraction</strong> — Highly attractive to bees, butterflies, and other beneficial insects
- ✓ <strong>Garden Use</strong> — Ideal for ornamental borders, mass plantings, sensory gardens, and cutting gardens
1.2.Bluebeard — Quick Summary
- ✓ Ornamental hybrid shrub known for its captivating late-season blue flowers.
- ✓ Aromatic foliage attracts vital pollinators like bees and butterflies.
- ✓ Primarily grown for aesthetic garden value; lacks established medicinal uses.
- ✓ Exceptionally easy to grow, highly drought-tolerant, and generally pest/disease resistant.
- ✓ Thrives in full sun and well-drained soil; suitable for USDA Hardiness Zones 6-9.
2.Bluebeard — Scientific Identity
3.Bluebeard — Quick Facts
4.Bluebeard — Appearance & Identification
5.Bluebeard — Native Habitat
6.Bluebeard — Water Requirements
- ✓ Soil Requirements — Plant in loose, well-drained loamy soil; avoid heavy, poorly drained clay soils to prevent crown rot.
- ✓ Light Exposure — Requires full sun, meaning at least 6 or more hours of direct sunlight daily, for optimal flowering and robust growth.
- ✓ Watering — Water thoroughly after initial planting; once established, *Caryopteris x clandonensis* is drought tolerant and needs only moderate watering during extended dry periods.
- ✓ Pruning — Cut back stems severely in late winter or early spring (to 6-12 inches from the ground) to encourage vigorous new growth, as blooms occur on new wood.
- ✓ Fertilization — Fertilize sparingly; excessive nitrogen can lead to lanky, weak growth rather than abundant flowering.
- ✓ Hardiness Zones — Best suited for USDA Plant Hardiness Zones 6a through 9b; in colder zones, stems may die back to the ground but often regrow from the crown.
- ✓ Planting Technique — Dig a planting hole twice as wide as the root ball and just as deep, ensuring the top of the root ball is level with the surrounding soil surface. Backfill gently and water well.
- ✓ Pest and Disease Resistance — This shrub is notably resistant to most common pests and diseases, and is seldom browsed by deer.
Reviewed by the Flora Medical Global Botanical Review Panel
Multi-disciplinary editorial group · Botany · Ethnobotany · Herbal-medicine literature
Who reviewed this: This page was checked by the Flora Medical Global Botanical Review Panel — an in-house editorial group of botany graduates, ethnobotany researchers, and horticulture practitioners who collectively maintain our 7,000+ plant encyclopedia. Meet the team.
Our 4-step verification process
1. Taxonomic verification
Scientific names and synonyms cross-checked against Kew POWO, World Flora Online, and The Plant List.
2. Phytochemical & medicinal cross-reference
Active compounds, traditional uses, and reported activities are cross-referenced with PubMed, USDA Dr. Duke's database, and peer-reviewed ethnobotanical literature.
3. Conservation & distribution check
Distribution, ecology, and conservation status confirmed against GBIF occurrence records and the IUCN Red List.
4. Editorial & safety review
Every entry passes an editorial pass for clarity, originality, and safety notices (toxicity, contraindications, dosage caveats) before publication.
Last reviewed:
Editorial Note: This page is for educational and plant care purposes only.
Written by: Flora Medical Global Editorial Team
Reviewed by: Flora Medical Global Botanical Review Panel
Last Updated: June 19, 2026
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