North America Native Plant

Yellowflower Clermontia

Botanical name: Clermontia fulva

USDA symbol: CLFU

Life cycle: perennial

Habit: shrub

Native status: Native to Hawaii  

Yellowflower Clermontia: A Rare Hawaiian Treasure Worth Protecting If you’re passionate about native Hawaiian plants and conservation gardening, the yellowflower clermontia (Clermontia fulva) might just capture your heart. This remarkable shrub represents the unique beauty of Hawaii’s endemic flora, though its rarity makes it a special responsibility for gardeners who ...

Rare plant alert!

Region: Conservation status by state

Status: S1S3Q: Status is uncertain but is somewhere between the following rankings: Uncertain taxonomy: ⚘ Critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘ Vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals ⚘

Yellowflower Clermontia: A Rare Hawaiian Treasure Worth Protecting

If you’re passionate about native Hawaiian plants and conservation gardening, the yellowflower clermontia (Clermontia fulva) might just capture your heart. This remarkable shrub represents the unique beauty of Hawaii’s endemic flora, though its rarity makes it a special responsibility for gardeners who choose to grow it.

What Makes Yellowflower Clermontia Special

Yellowflower clermontia is a perennial shrub that’s exclusively native to the Hawaiian Islands. This multi-stemmed woody plant typically grows to heights of 13-16 feet, though it can vary depending on environmental conditions. As its common name suggests, this beauty produces distinctive yellow tubular flowers that make it a standout in any garden setting.

Where You’ll Find This Hawaiian Native

This endemic species calls only Hawaii home, thriving in the islands’ unique wet forest ecosystems. You won’t find Clermontia fulva growing naturally anywhere else in the world, making it a true treasure of Hawaiian biodiversity.

A Word of Caution: Rarity Matters

Here’s something important every potential grower should know: yellowflower clermontia has a Global Conservation Status of S1S3Q, indicating it’s quite rare in the wild. This means if you’re considering adding this plant to your garden, you absolutely must source it responsibly. Only purchase from reputable native plant nurseries that propagate their specimens ethically, never collect from wild populations.

Why Grow Yellowflower Clermontia?

Despite its rarity challenges, there are compelling reasons to consider this native Hawaiian shrub:

  • Conservation value: Growing rare natives helps preserve genetic diversity
  • Unique beauty: Those yellow tubular flowers are truly distinctive
  • Cultural significance: It’s part of Hawaii’s irreplaceable natural heritage
  • Wildlife support: Adapted to benefit native Hawaiian birds, particularly honeycreepers

Growing Conditions and Care

Yellowflower clermontia isn’t for casual gardeners—it requires specific conditions to thrive:

  • Climate: USDA zones 10-11 (tropical to subtropical)
  • Soil: Well-draining, acidic soil that stays consistently moist
  • Light: Partial shade, mimicking its natural forest habitat
  • Water: Regular moisture without waterlogging
  • Protection: Shelter from strong winds

Garden Design Ideas

This rare shrub works best in specialized settings:

  • Native Hawaiian plant gardens
  • Conservation-focused landscapes
  • Botanical collections
  • Educational gardens highlighting endemic species

Given its eventual size of 13-16 feet, plan for adequate space and consider it as a specimen plant or background element in larger native plantings.

The Bottom Line

Yellowflower clermontia represents both an opportunity and a responsibility. If you’re committed to conservation gardening and can provide the specific growing conditions this Hawaiian endemic needs, it can be a meaningful addition to your landscape. Just remember: only source from ethical suppliers, and consider yourself a steward of this rare native treasure.

For most gardeners, especially those outside Hawaii, supporting conservation efforts and choosing more readily available native plants for your region might be the better choice. But for dedicated native plant enthusiasts with the right conditions, yellowflower clermontia offers a chance to participate in preserving Hawaii’s unique botanical heritage.

Yellowflower Clermontia

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

Campanulales

Family

Campanulaceae Juss. - Bellflower family

Genus

Clermontia Gaudich. - clermontia

Species

Clermontia fulva Levl., nom. inq. - yellowflower clermontia

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