Native Plants

Valley Cyrtandra

Cyrtandra calpidicarpa

USDA symbol: CYCA8

perennial shrub

Hawaii: native

If you’re looking to add a touch of authentic Hawaiian beauty to your tropical garden, meet the valley cyrtandra (Cyrtandra calpidicarpa). This charming native shrub is like finding a hidden gem in Hawaii’s lush forests – beautiful, unique, and unfortunately becoming increasingly rare in the wild. Valley cyrtandra is a ...

Valley Cyrtandra may be listed as rare in your area.
Global Conservation Status

Status: S3 | Vulnerable: Found only in a restricted range (even if abundant at some locations). Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals.

Valley Cyrtandra: A Rare Hawaiian Native Worth Protecting in Your Garden

If you’re looking to add a touch of authentic Hawaiian beauty to your tropical garden, meet the valley cyrtandra (Cyrtandra calpidicarpa). This charming native shrub is like finding a hidden gem in Hawaii’s lush forests – beautiful, unique, and unfortunately becoming increasingly rare in the wild.

What Makes Valley Cyrtandra Special?

Valley cyrtandra is a perennial shrub that belongs to the same family as African violets, and it shows! This multi-stemmed woody beauty typically grows 4-5 meters tall (that’s about 13-16 feet) and produces lovely tubular flowers that are absolutely irresistible to Hawaii’s native birds and pollinators. The broad, attractive leaves create a lush backdrop that screams tropical paradise.

What makes this plant truly special is its endemic status – it’s found nowhere else on Earth except Hawaii. You might also see it listed under its botanical synonym, Cyrtandra cornuta H. St. John, but don’t let the scientific names confuse you. This is pure Hawaiian magic.

Where Does Valley Cyrtandra Call Home?

This native beauty is exclusively found in Hawaii, where it naturally grows in the understory of wet forests. It’s perfectly adapted to the islands’ humid, shaded environments where it can soak up the misty mountain air.

  • Species observed
  • No observations

A Word of Caution: This Plant Needs Our Help

Here’s something important every gardener should know: valley cyrtandra has a Global Conservation Status of S3, meaning it’s considered vulnerable. With typically only 21 to 100 occurrences remaining in the wild and between 3,000 and 10,000 individual plants, this species is walking a tightrope toward extinction.

If you want to grow valley cyrtandra, please only use responsibly sourced material from reputable native plant nurseries or conservation programs. Never collect from wild populations – every plant in nature is precious for the species’ survival.

Perfect Spots for Valley Cyrtandra in Your Garden

Valley cyrtandra is ideal for:

  • Tropical and subtropical shade gardens (USDA zones 10-12)
  • Native Hawaiian landscape designs
  • Understory plantings beneath larger trees
  • Humid microclimates in your yard
  • Conservation gardens focused on endangered species

This isn’t a plant for every climate – it’s strictly tropical and needs that warm, humid Hawaiian-style environment to thrive.

Growing Valley Cyrtandra Successfully

Think of valley cyrtandra as the introvert of the plant world – it prefers the quiet, shaded spots where it can enjoy indirect light and consistent moisture. Here’s how to keep your valley cyrtandra happy:

Light and Location

Partial to full shade is essential. Direct sunlight will stress this forest dweller, so find a spot that mimics its natural understory habitat.

Soil and Water

Provide well-draining but consistently moist soil that’s rich in organic matter. Think forest floor conditions – not soggy, but never bone dry. Regular watering is crucial, especially during dry periods.

Humidity and Climate

High humidity is non-negotiable. If you’re in a drier climate within zones 10-12, consider grouping plants together or using a humidifier to create the misty conditions this plant craves.

Why Your Garden (and Hawaii) Needs Valley Cyrtandra

Beyond its natural beauty, valley cyrtandra plays an important role in supporting Hawaii’s native ecosystem. Its flowers provide nectar for native pollinators and birds, helping maintain the delicate balance of island biodiversity.

By growing valley cyrtandra responsibly in your garden, you’re not just adding a stunning tropical plant – you’re becoming a conservation hero, helping preserve a piece of Hawaii’s natural heritage for future generations.

The Bottom Line

Valley cyrtandra is absolutely worth growing if you have the right tropical climate and can source it responsibly. This rare Hawaiian native offers unique beauty, supports local wildlife, and connects your garden to one of the world’s most remarkable island ecosystems. Just remember: with great beauty comes great responsibility. Help protect this vulnerable species by choosing ethically sourced plants and never collecting from the wild.

Your garden – and Hawaii’s forests – will thank you for it.

Cyrtandra calpidicarpa is also known as...

Often we refer to plants by their common names. When shopping for plants the scientific name is the best way to positively identify the plant species you desire. But some plants have more than one name! While it doesn't happen often, nurseries might display one name while you're searching for another. Cyrtandra calpidicarpa is also known as:

Cyrtandra cornuta | USDA symbol: CYCO10

Why do some plants have more than one name? Over time plant species may be renamed for a few reasons:

  1. Botanists in different regions named the same plant without knowing it had already been classified.
  2. A species was reclassified after scientific advances in, for example, DNA analysis.
  3. Slight variations within a species are sometimes mistakenly identified as entirely new species.

Classification

Group: Dicot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida - Dicotyledons
Subclass: Asteridae
Order: Scrophulariales
Family: Gesneriaceae Rich. & Juss. - Gesneriad family
Genus: Cyrtandra J.R. Forst. & G. Forst. - cyrtandra

Species: Cyrtandra calpidicarpa (Rock) H. St. John & Storey - valley cyrtandra

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