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PlantFiles: Forked Blue Curls, Bluecurls
Trichostema dichotomum

Family: Lamiaceae (lay-mee-AY-see-ee) (Info)
Genus: Trichostema (try-ko-STEM-uh) (Info)
Species: dichotomum (dy-KAW-toh-mum) (Info)

Synonym:Trichostema pilosum
Synonym:Trichostema suffrutescens

12 members have or want this plant for trade.


18-24 in. (45-60 cm)
24-36 in. (60-90 cm)

12-15 in. (30-38 cm)

Not Applicable

Sun Exposure:
Full Sun
Sun to Partial Shade


Bloom Color:
Dark Blue
White/Near White

Bloom Time:
Late Summer/Early Fall
Mid Fall
Late Fall/Early Winter
Blooms all year
Blooms repeatedly


Other details:
This plant is attractive to bees, butterflies and/or birds
Flowers are fragrant
Average Water Needs; Water regularly; do not overwater
Self-sows freely; deadhead if you do not want volunteer seedlings next season

Soil pH requirements:
Unknown - Tell us

Patent Information:
Unknown - Tell us

Propagation Methods:
From seed; direct sow after last frost

Seed Collecting:
Bag seedheads to capture ripening seed
Properly cleaned, seed can be successfully stored

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By Floridian
Thumbnail #1 of Trichostema dichotomum by Floridian

By Floridian
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By Floridian
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By Floridian
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By Northernwisdom
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By Floridian
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By Floridian
Thumbnail #7 of Trichostema dichotomum by Floridian

There are a total of 12 photos.
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2 positives
1 neutral
No negatives

Gardeners' Notes:

Positive acfrancis On Sep 1, 2013, acfrancis from Trenton, FL (Zone 8b) wrote:

In Gilchrist County, FL, this native plant makes it's appearance in late Spring/early Summer and by late Summer is full grown and ready to flower til early Winter. It is like others in the mint family in that it will quickly multiply - with each season's dispersal of seeds. It likes well drained sandy soil, especially popping up in disturbed sites, and tolerates draught. It makes an attractive small (but annual) shrub and beautiful morning flowers for the informal native gardener.

Positive Floridian On Dec 29, 2004, Floridian from Lutz, FL (Zone 9b) wrote:

This bushy herbaceous annual grows to about 2.5 feet tall. It blooms sporadically all year putting on its best show towards late summer and early fall. The leaves become very aromatic as it goes to seed. Its natural habitat is sandy beaches and dry woodland areas throughout the southeastern United States and the Bahamas.

Neutral Weezingreens On Oct 21, 2002, Weezingreens from Seward, AK (Zone 3b) wrote:

Blue Curl is a native herbaceous plant prevalent in the southern states of the U.S. It is a member of the mint family, and its leaves have a lemony scent similar to pennyroyal (thus the other common name of Bastard Pennyroyal). The leaves are blade-like, occurring opposite one another on hairy, slightly sticky stems. The blue flowers are small with 6 petals and coiled stamens. They appear on the ends of the branches in ones and twos. T. dichotomum prefers dry sandy soil in sunny areas.


This plant has been said to grow in the following regions:

Fountain, Florida
Jacksonville, Florida
Lutz, Florida
Miami, Florida
Trenton, Florida
Newnan, Georgia
Rincon, Georgia
Savannah, Georgia
Brookeville, Maryland
Malden, Massachusetts
Revere, Massachusetts
Worcester, Massachusetts
Florence, Mississippi
Lucedale, Mississippi
Twin Lakes, Wisconsin

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