Azure bluet (Houstonia caerulea)

Azure bluet

Also known as: Bluets

Azure bluet (Houstonia caerulea) is a perennial wildflower that grows up to 15 cm tall. It produces showy blossoms of delicate, blue flowers with yellow centers from mid-spring to summer. The plant grows in a rosette shape. When planted in groups, it will provide a striking carpet of blue blossoms. Azure bluet attracts butterflies and bees and is commonly found growing wild in forests, lawns and disturbed sites.

Scientific classification

Species

Azure bluet (Houstonia caerulea)

Gentians, dogbanes, madders, and allies

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Perennial, Annual

Lifespan

Herb

Plant Type

Spring, Summer, Early fall

Bloom Time

1 cm

Flower Size

Green

Fruit Color

Blue, White, Yellow, Purple

Flower Color

Green

Stem Color

Winter dormancy

Dormancy

Evergreen, Deciduous

Leaf type

20 - 35 ℃

Ideal Temperature

Spring, Summer, Winter

Growth Season

Moderate

Growth Rate

Images of Azure bluet

Culture

Symbolism

Aacred and deep longings of a poet’s soul, transitoriness, of spring and of beauty

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Quickly Identify Azure bluet

Compact size, up to 6 inches (15 cm), with basal rosette of larger leaves.

Small blue flowers with yellow center, 0.4 inches (1 cm) wide, on unbranched stems.

Dry, dehiscent capsules around 1/8 inch (3 mm) with bumpy textures when mature.

Basal leaves spatulate to oblanceolate, 1-1.5 inches (2.5-4 cm) long; stem leaves narrow, 0.1-0.25 inches (0.25-0.6 cm) long.

Slender, erect, unbranched stem, 3-6 inches (7.6-15.2 cm) tall, with slightly square cross-section.

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Care Guide for Azure bluet

Twice per week

Water

Full sun

Sunlight

20 - 35 ℃

Ideal Temperature

Garden Soil

Soil Type

Water: Thriving in moist meadows, azure bluet prefers regular hydration, needing water twice a week. It can tolerate short dry spells. For indoor growth, use well-draining soil to prevent root rot while maintaining moisture balance.

Fertilize: For azure bluet, use a balanced fertilizer monthly during the growing season at one-quarter strength. Avoid over-fertilization to prevent root burn, adjusting in winter. Mix fertilizer with watering for even distribution, and use gloves. Beginners should start with smaller amounts to assess azure bluet's response.

Pruning: Pruning azure bluet in early to late spring helps maintain its shape and encourages continuous blooming. Remove dead stems to promote health and prevent disease. Avoid heavy pruning, as azure bluet maintains a compact form. Consult reliable sources for optimal care practices.

Propagation: Azure bluet propagates best via cuttings during spring or summer. This process is moderately easy, with new shoots and healthy roots signifying success. Ensure adequate sunlight, well-drained soil, and use suitable rooting hormones for optimal growth.

Repotting: Repot 'azure bluet' every 2-3 years in spring using a shallow, well-draining container. Ensure consistent moisture without waterlogging to support its growth and promote delicate blue blooms. This care method aligns with 'azure bluet's modest needs for optimal health and vitality.

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