North America Native Plant

Bluethread

Botanical name: Burmannia

USDA symbol: BURMA

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states âš˜ Native to Pacific Basin excluding Hawaii âš˜ Native to Puerto Rico  

Bluethread: A Tiny Native Gem That’s Not for Every Garden If you’ve never heard of bluethread (Burmannia), you’re not alone! This diminutive native annual is one of those blink and you’ll miss it wildflowers that quietly goes about its business in the wetlands and moist areas of the southeastern United ...

Bluethread: A Tiny Native Gem That’s Not for Every Garden

If you’ve never heard of bluethread (Burmannia), you’re not alone! This diminutive native annual is one of those blink and you’ll miss it wildflowers that quietly goes about its business in the wetlands and moist areas of the southeastern United States. While it might not be the showstopper you’re looking for, bluethread has its own subtle charm for the right gardener.

What Makes Bluethread Special?

Bluethread is a true native plant species found naturally across the lower 48 states, with populations extending into the Pacific Basin and Puerto Rico. This little annual has carved out its niche in some pretty specific habitats, which gives us our first clue about whether it belongs in your garden.

Where You’ll Find Bluethread Growing Wild

In nature, bluethread calls home to several southeastern states including Alabama, Florida, Georgia, Louisiana, Mississippi, North Carolina, Oklahoma, South Carolina, Texas, and Virginia. You’ll also find it in Puerto Rico and Palau. It’s quite the traveler for such a small plant!

The Reality Check: Should You Grow Bluethread?

Here’s where we need to have an honest conversation. Bluethread is absolutely fascinating from a botanical perspective, but it comes with some serious challenges for home gardeners:

  • It’s tiny – we’re talking about a plant that most people would overlook entirely
  • The flowers are minuscule and, while technically blue to purple, aren’t going to create any visual impact
  • It requires very specific growing conditions that are hard to replicate
  • As an annual, you’d need to replant or reseed every year

Growing Conditions: Not Your Average Garden Plant

If you’re still intrigued and want to give bluethread a try, here’s what you need to know about its preferred growing conditions:

  • Moisture: Consistently moist to wet soil – think bog garden conditions
  • Soil type: Acidic soils are essential
  • Light: Partial shade works best
  • Climate: USDA hardiness zones 8-11

The Challenge of Cultivation

Let’s be honest – bluethread isn’t easy to grow. It’s adapted to very specific wetland conditions that are challenging to replicate in most home gardens. Even experienced native plant gardeners often struggle with this one. The plant requires consistent moisture without becoming waterlogged, acidic soil conditions, and just the right amount of shade.

Who Should Consider Growing Bluethread?

Bluethread might be right for you if:

  • You’re a serious native plant collector who appreciates botanical rarities
  • You have a bog garden or constructed wetland area
  • You’re working on habitat restoration in appropriate regions
  • You enjoy the challenge of growing difficult native species

Wildlife and Pollinator Value

Due to its extremely small flower size, bluethread doesn’t offer significant benefits to most pollinators. However, it may provide habitat value at the ground level for tiny insects and contribute to the overall ecosystem diversity in specialized wetland plantings.

Better Alternatives for Most Gardens

If you’re drawn to native annuals for your southeastern garden but want something more manageable and visually impactful, consider these alternatives:

  • Wild bergamot for pollinator gardens
  • Native sunflowers for sunny spots
  • Coral bean for dramatic height and color
  • Native asters for fall blooms

The Bottom Line

Bluethread is a fascinating piece of our native plant heritage, but it’s definitely a specialist’s plant. Unless you have the specific growing conditions it requires and a passion for challenging native species, you might want to admire this little gem in its natural habitat rather than attempting to grow it at home. Sometimes the best way to appreciate a native plant is simply knowing it exists and doing our part to protect the wild spaces where it thrives.

For most gardeners, there are plenty of other native plants that will give you better results with less fuss – and your local pollinators will thank you for choosing species that actually feed them!

Bluethread

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Liliidae

Order

Orchidales

Family

Burmanniaceae Blume - Burmannia family

Genus

Burmannia L. - bluethread

Species

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