North America Non-native Plant

Blue-flowerd Starviolet

Botanical name: Hedyotis cyanantha

USDA symbol: HECY4

Life cycle: annual

Habit: forb

Native status: Non-native, reproduces and persists in the wild in Pacific Basin excluding Hawaii  

Blue-Flowered Starviolet: A Pacific Basin Native Worth Knowing About Meet the blue-flowered starviolet (Hedyotis cyanantha), a charming little annual that calls the Pacific Basin home. While you might not find this plant at your local garden center, it’s worth understanding what makes this species unique, especially if you’re interested in ...

Blue-Flowered Starviolet: A Pacific Basin Native Worth Knowing About

Meet the blue-flowered starviolet (Hedyotis cyanantha), a charming little annual that calls the Pacific Basin home. While you might not find this plant at your local garden center, it’s worth understanding what makes this species unique, especially if you’re interested in Pacific Island flora or looking for alternatives to common garden plants.

What is Blue-Flowered Starviolet?

Blue-flowered starviolet is an annual forb – basically a non-woody plant that completes its entire life cycle in one growing season. As a member of the Rubiaceae family, it shares relatives with coffee plants and gardenias, though it’s much more modest in appearance. This little plant lacks the woody stems of shrubs and trees, instead producing soft, herbaceous growth that dies back each year.

Where Does It Grow Naturally?

This species is native to the Pacific Basin region, where it has established populations in Guam and Palau. Interestingly, while it’s indigenous to this region, it’s been introduced to other Pacific areas where it now reproduces and persists without human intervention.

Should You Grow Blue-Flowered Starviolet?

Here’s where things get a bit tricky. While this isn’t a plant you’re likely to encounter in typical gardening scenarios, understanding its characteristics can help inform your gardening decisions:

  • Limited cultivation information: There’s very little documented information about growing this species in home gardens
  • Annual nature: As an annual, you’d need to replant or allow it to self-seed each year
  • Regional specificity: It’s naturally adapted to Pacific Basin conditions
  • Non-native consideration: If you’re outside its native range, consider native alternatives first

Native Alternatives to Consider

If you’re drawn to small annual flowers with similar characteristics, consider exploring native options in your area instead. Native plants offer several advantages:

  • Better adaptation to local growing conditions
  • Support for local wildlife and pollinators
  • Lower maintenance requirements
  • Contribution to regional biodiversity

Contact your local native plant society or extension office to discover annual forbs native to your specific region that might offer similar garden appeal.

The Bottom Line

While blue-flowered starviolet is an interesting Pacific Basin native, it’s not commonly cultivated and lacks readily available growing information. Rather than seeking out this particular species, consider it a reminder to explore the fascinating diversity of native plants in your own region. Your local native annuals are likely to be more readily available, easier to grow, and more beneficial to your local ecosystem.

Remember, the best garden plants are often the ones that naturally belong in your area – they’ve evolved to thrive in your specific conditions and support the wildlife that calls your region home.

Blue-flowerd Starviolet

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

Rubiales

Family

Rubiaceae Juss. - Madder family

Genus

Hedyotis L. - starviolet

Species

Hedyotis cyanantha Kurz - blue-flowerd starviolet

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