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Annual

Bluecurls

Trichostema dichotomum L.

Forked BluecurlsCommon Blue CurlsBlue CurlsBastard PennyroyalForked Blue-curls

Bluecurls is a captivating native annual of eastern North America, celebrated for its delicate two-lipped violet-blue flowers adorned with dramatically arched, hair-like stamens. It symbolizes creativity, individuality, and the surprising beauty found in humble, overlooked places.

Plant Family

Lamiaceae (Mint family)

Blooming

Mid-summer through late fall (August–November); individual flowers open only in the morning and drop by midday, but plants produce thousands of blooms over the season

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Bluecurls flowers with two-lipped violet petals and dramatically arching blue stamens in a sunlit meadow
Bluecurls flowers with two-lipped violet petals and dramatically arching blue stamens in a sunlit meadow

Symbolism & Meanings

Key Meanings

Creativity
Individuality
Surprise
Quiet wonder
Industriousness
Overlooked beauty

Perfect For

Native plant celebrationsLate summer and fall garden eventsGifts for those who find beauty in unexpected places

Color Meanings

Violet Blue:Creativity, inspiration, and the unexpected
Blue:Calm, clarity, and quiet confidence
Lavender:Gentleness, grace, and subtle enchantment

Similar flowers: verbenas and bee balms also share similar meanings.

Cultural Significance

Bluecurls occupies a quietly extraordinary niche in the world of native wildflowers. It tends to grow in the least glamorous places — sandy roadsides, bare pine woodland clearings, disturbed edges — and yet the flower itself is a masterpiece of botanical engineering. The name Trichostema, from the Greek for "hair-like stamens," perfectly captures the plant's most defining feature: four long, arching filaments that sweep outward from the tiny bloom like a pair of elegant curling antennae. In 2025, it was honored as the North Carolina Wildflower of the Year — a first for an annual plant in that program's 43-year history — recognizing the growing appreciation for this underappreciated native gem. Its extraordinary ability to produce thousands of nectar-rich blooms across a long season makes it a cornerstone resource for native bees entering the lean months of fall.
Related cultural flowers:Sunflower, Rose
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Botanical Information

Physical Characteristics

Flower Size: 0.5–0.75 inch (1.2–2 cm) long per flower; small but intricately detailed
Plant Size: 1–3 feet tall (30–90 cm), 1–2 feet wide; erect with repeatedly forked branching
Flower Shape: Two-lipped (bilabiate): upper lip has 4 lobes, lower lip has 1 larger reflexed lobe spotted with purple; 4 conspicuously long, arching blue-purple stamens curve dramatically outward — the genus name Trichostema means "hair-like stamens"

Natural Habitat

Native to: Eastern North America — from southern Maine south through Florida, west to Texas, north to Missouri and Michigan; also Ontario and Quebec, Canada
Habitat: Sandy and dry open woodlands, pine flatwoods, sandhills, open fields, roadsides, and disturbed areas
Climate: Temperate, Subtropical

Growing Guide

Sunlight

Full sun to very light partial shade; performs best in open, sunny sites

Water

Low; thrives in dry, sandy conditions with minimal water; poor drainage can be fatal

Soil

Sandy, Dry, Well-drained, Low fertility, Acidic to neutral

Expert Growing Tips

1

Sow seeds directly in fall in dry, sandy, well-drained soil; seeds require no stratification

2

A prolific self-seeder — thin seedlings in spring to prevent overcrowding

3

Do not amend soil with compost or fertilizer; this plant thrives in poor, dry conditions

4

Plants are fragrant — leaves smell of a pleasant lemon-mint when crushed

5

Named the 2025 North Carolina Wildflower of the Year — excellent for native seed mixes in the eastern US

6

Individual flowers are short-lived (morning only) but each plant produces hundreds to thousands over a long season

7

Sticky stems and leaves are characteristic; handle with care to avoid sap on clothing

Uses & Benefits

Ornamental Uses

  • Native plant wildflower gardens and meadows
  • Pollinator and bee-habitat gardens
  • Sandy, dry-soil borders where little else thrives
  • Naturalized garden edges and informal cottage garden settings
  • Late-season color when few other natives are blooming

Traditional Uses

  • Used historically by various eastern Native American peoples as a medicinal herb; specific applications varied by tribe and region
  • The aromatic mint-family foliage was used in some traditional remedies, though no widely documented modern medicinal uses exist
  • The pleasant lemony-mint scent when leaves are crushed suggests aromatic compounds consistent with other Lamiaceae members

Disclaimer: Information provided is for educational purposes only. Consult healthcare professionals before using any plant medicinally.

Frequently Asked Questions about the Bluecurls

What does bluecurls flower symbolize?

Bluecurls symbolizes creativity, individuality, and the surprising beauty found in overlooked places. Its intricate arching stamens and violet blooms speak to quiet wonder — the delight of discovering something extraordinary where you least expected it.

Why are bluecurls flowers so short-lived?

Individual Bluecurls flowers open only in the morning and drop their petals by midday. However, this is offset by the plant's extraordinary productivity — a healthy plant produces hundreds to thousands of blooms throughout the season, providing a continuous nectar source for pollinators from August through November.

Is bluecurls easy to grow?

Yes, in the right conditions — it thrives in dry, sandy, well-drained soil in full sun with little to no fertilization. It is a prolific self-seeder and will naturally return year after year in suitable spots. It struggles in rich, moist, or clay-heavy soils.

Is bluecurls a good pollinator plant?

Excellent — it is one of the best late-season native plants for bees. The long curved stamens are adapted to deposit pollen on bees as they crawl into the flowers, and the abundance of blooms makes it a critical food source for native bees heading into fall when many other flowers are done.

What does bluecurls smell like?

The leaves and stems have a pleasant lemon-mint fragrance when crushed, owing to the aromatic compounds typical of the mint family (Lamiaceae). The scent is fresh and clean rather than pungent, making the plant agreeable to handle in the garden.

Where does bluecurls grow naturally?

Bluecurls is native to eastern North America, growing naturally in dry, sandy open woodlands, pine flatwoods, sandhills, and disturbed areas from southern Maine south to Florida and west to Texas and Missouri. It is especially common in the Atlantic Coastal Plain and Piedmont regions.

Available Colors

Blue
Violet Blue
Purple
Lavender

Quick Facts

Type:annual
Family:Lamiaceae (Mint family)
Native to:Eastern North America — from southern Maine south through Florida, west to Texas, north to Missouri and Michigan; also Ontario and Quebec, Canada
Blooms:Mid-summer through late fall (August–November); individual flowers open only in the morning and drop by midday, but plants produce thousands of blooms over the season

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