North America Native Plant

Forked Bluecurls

Botanical name: Trichostema dichotomum

USDA symbol: TRDI2

Life cycle: annual

Habit: forb

Native status: Native to Canada âš˜ Native to the lower 48 states  

Synonyms: Trichostema dichotomum L. var. puberulum Fernald & Grisc. (TRDIP)  âš˜  Trichostema pilosum Roth (TRPI5)   

Forked Bluecurls: A Charming Native Annual for Wild Gardens If you’re looking for a native wildflower that brings late-season color and supports pollinators without demanding much fuss, forked bluecurls (Trichostema dichotomum) might just be your new garden friend. This delightful little annual has been quietly decorating North American landscapes long ...

Forked Bluecurls: A Charming Native Annual for Wild Gardens

If you’re looking for a native wildflower that brings late-season color and supports pollinators without demanding much fuss, forked bluecurls (Trichostema dichotomum) might just be your new garden friend. This delightful little annual has been quietly decorating North American landscapes long before European settlers arrived, and it’s ready to add some wild charm to your garden too.

What Makes Forked Bluecurls Special?

Forked bluecurls gets its name from its distinctive flower clusters that split into forked branches, each topped with small, curved blue to purple blooms. The flowers have an almost whimsical appearance, with their tubular petals and long, protruding stamens that curve gracefully outward. It’s like nature’s version of tiny blue curling ribbons dancing in the breeze.

As an annual forb (that’s botanist-speak for a non-woody flowering plant), forked bluecurls completes its entire life cycle in one growing season. Don’t let its small stature fool you though – this plant packs a punch when it comes to supporting local wildlife and adding texture to naturalized plantings.

Where Does It Call Home?

Forked bluecurls is a true North American native, naturally occurring from southeastern Canada down to Florida and stretching west to Texas and parts of the Great Plains. You’ll find it growing wild in states including Alabama, Arkansas, Connecticut, Delaware, Florida, Georgia, Illinois, Indiana, Iowa, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Mississippi, Missouri, New Hampshire, New Jersey, New York, North Carolina, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Carolina, Tennessee, Texas, Vermont, Virginia, and West Virginia, plus Ontario and Quebec in Canada.

Garden Role and Design Ideas

Forked bluecurls shines brightest in wild, naturalized settings where it can express its free-spirited nature. Here’s where it works best:

  • Wildflower meadows and prairie restorations
  • Naturalized garden borders
  • Disturbed site restoration projects
  • Native plant gardens
  • Areas where you want late-season color without high maintenance

This isn’t the plant for formal flower beds or manicured landscapes – it’s got more of a I grew here naturally vibe that looks best when allowed to mingle with other native wildflowers and grasses.

Growing Conditions and Care

One of the best things about forked bluecurls is how easygoing it is. This plant has adapted to some pretty challenging conditions in the wild, which means less work for you:

  • Sunlight: Full sun is preferred
  • Soil: Well-drained sandy or gravelly soils; tolerates poor, dry conditions
  • Water: Drought tolerant once established; doesn’t like wet feet
  • USDA Zones: 3-9 (as an annual)

The wetland status varies by region, but generally, forked bluecurls is an obligate upland plant, meaning it almost never occurs in wetlands. In the Great Plains, it’s more flexible and can handle some moisture, but overall, this is a plant that prefers drier conditions.

Planting and Propagation Tips

Getting forked bluecurls established in your garden is refreshingly simple:

  • Direct seed in spring after the last frost or in fall for spring germination
  • Scatter seeds over prepared soil and lightly rake in
  • Seeds are small, so don’t bury them too deeply
  • Water gently until germination occurs
  • Once established, the plants will often self-seed for next year

The beauty of working with annuals like forked bluecurls is that they often create their own sustainable populations through self-seeding, giving you that perfect wild look year after year.

Wildlife and Pollinator Benefits

Despite its small flowers, forked bluecurls is a pollinator magnet. Bees, butterflies, and other small beneficial insects appreciate the nectar-rich blooms, especially since this plant flowers later in the season when many other wildflowers have finished blooming. It’s like providing a late-season snack bar for your local pollinators.

Should You Plant Forked Bluecurls?

If you’re creating a native wildflower garden, restoration project, or simply want to support local wildlife with minimal effort, forked bluecurls is definitely worth considering. It’s particularly valuable if you:

  • Want to support native pollinators
  • Have dry, sandy, or poor soil conditions
  • Prefer low-maintenance plants
  • Are working on naturalized or wild garden areas
  • Want late-season color and texture

However, if you’re looking for showy garden specimens, reliable cut flowers, or plants for formal landscapes, you might want to explore other options.

The Bottom Line

Forked bluecurls may not win any most dramatic garden plant awards, but it offers something equally valuable: authentic native charm that supports local ecosystems while asking very little in return. In our increasingly managed world, there’s something deeply satisfying about growing a plant that feels truly wild and free. Plus, your local bees and butterflies will definitely approve of your choice.

Wetland Status

The rule of seasoned gardeners and landscapers is to choose the "right plant for the right place" matching plants to their ideal growing conditions, so they'll thrive with less work and fewer inputs. But the simplicity of this catchphrase conceals how tricky plant selection is. While tags list watering requirements, there's more to the story.

Knowing a plant's wetland status can simplify the process by revealing the interaction between plants, water, and soil. Surprisingly, many popular landscape plants are wetland species! And what may be a wetland plant in one area, in another it might thrive in drier conditions. Also, it helps you make smarter gardening choices and grow healthy plants with less care and feeding, saving you time, frustration, and money while producing an attractive garden with greater ecological benefits.

Regions
Status
Moisture Conditions

Atlantic and Gulf Coastal Plain

UPL

Obligate Upland - Plants with this status almost never occurs in wetlands

Eastern Mountains and Piedmont

UPL

Obligate Upland - Plants with this status almost never occurs in wetlands

Great Plains

FAC

Facultative - Plants with this status can occur in wetlands and non-wetlands

Midwest

UPL

Obligate Upland - Plants with this status almost never occurs in wetlands

Northcentral & Northeast

UPL

Obligate Upland - Plants with this status almost never occurs in wetlands

Forked Bluecurls

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Lamiales

Family

Lamiaceae Martinov - Mint family

Genus

Trichostema L. - bluecurls

Species

Trichostema dichotomum L. - forked bluecurls

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA