North America Native Plant

Frosted Cyrtandra

Botanical name: Cyrtandra pruinosa

USDA symbol: CYPR7

Life cycle: perennial

Habit: shrub

Native status: Native to Hawaii  

Frosted Cyrtandra: A Rare Hawaiian Native Worth Knowing Meet the frosted cyrtandra (Cyrtandra pruinosa), a charming Hawaiian native that’s as intriguing as its frosty-sounding name suggests. This perennial shrub represents one of Hawaii’s unique botanical treasures, though it’s not exactly what you’d call a common garden center find. What Makes ...

Rare plant alert!

Region: Conservation status by state

Status: SHQ: Status is uncertain but is somewhere between the following rankings: Uncertain taxonomy: ⚘ Possibly Extinct: Known only from historical occurrences. Still some hope of rediscovery ⚘

Frosted Cyrtandra: A Rare Hawaiian Native Worth Knowing

Meet the frosted cyrtandra (Cyrtandra pruinosa), a charming Hawaiian native that’s as intriguing as its frosty-sounding name suggests. This perennial shrub represents one of Hawaii’s unique botanical treasures, though it’s not exactly what you’d call a common garden center find.

What Makes Frosted Cyrtandra Special?

The frosted cyrtandra is a true Hawaiian original – endemic to the islands and found nowhere else on Earth. As a member of the diverse Cyrtandra genus, this species showcases the incredible plant diversity that makes Hawaii’s flora so remarkable. It’s a multi-stemmed woody shrub that typically stays under 13-16 feet tall, making it a manageable size for most landscape settings.

Where You’ll Find It Growing Wild

This native beauty calls only Hawaii home, having evolved specifically within the unique ecosystems of the Hawaiian Islands. It’s part of the natural heritage that makes Hawaiian landscapes so distinctive and ecologically valuable.

A Word of Caution: Rarity Matters

Here’s where things get important: frosted cyrtandra carries a Global Conservation Status of SHQ, indicating it may face conservation challenges. If you’re considering adding this native beauty to your garden, responsible sourcing is absolutely crucial. This means:

  • Only obtain plants from reputable native plant nurseries
  • Never collect from wild populations
  • Ensure any plants you purchase are ethically propagated
  • Consider supporting conservation efforts for Hawaiian native plants

Why Choose Frosted Cyrtandra for Your Garden?

If you’re gardening in Hawaii or other tropical zones (USDA zones 10-12), frosted cyrtandra offers several compelling reasons to include it in your landscape:

  • Native heritage: Supporting indigenous plants helps preserve Hawaii’s natural character
  • Adapted survivor: Being native means it’s naturally suited to local conditions
  • Conservation contribution: Growing native species in cultivation can support conservation efforts
  • Unique appeal: You’ll have something truly special that most gardeners have never seen

Growing Conditions and Care

As a Hawaiian native, frosted cyrtandra likely appreciates the warm, humid conditions typical of tropical environments. While specific growing requirements aren’t widely documented, most Hawaiian Cyrtandra species prefer:

  • Partial shade to filtered sunlight
  • Well-draining soil with good organic content
  • Consistent moisture without waterlogging
  • Protection from strong winds
  • Warm temperatures year-round

Is Frosted Cyrtandra Right for Your Garden?

This native Hawaiian shrub is best suited for gardeners who:

  • Live in tropical or subtropical climates
  • Are passionate about native plant conservation
  • Want to create authentic Hawaiian landscapes
  • Are committed to responsible plant sourcing
  • Appreciate rare and unique garden specimens

The Bottom Line

Frosted cyrtandra represents the kind of botanical treasure that makes native plant gardening so rewarding. While it may not be the easiest plant to find or the most well-documented to grow, it offers something invaluable: a direct connection to Hawaii’s natural heritage. If you can source it responsibly and provide appropriate growing conditions, you’ll be doing your part to keep this unique species thriving while enjoying something truly special in your garden.

Remember, when it comes to rare native plants like frosted cyrtandra, every garden that grows them responsibly becomes a small conservation sanctuary. Now that’s what we call gardening with purpose!

Frosted Cyrtandra

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

Scrophulariales

Family

Gesneriaceae Rich. & Juss. - Gesneriad family

Genus

Cyrtandra J.R. Forst. & G. Forst. - cyrtandra

Species

Cyrtandra pruinosa H. St. John & Storey - frosted cyrtandra

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