North America Native Plant

Waimakanui

Botanical name: Pteris excelsa

USDA symbol: PTEX

Life cycle: perennial

Habit: forb

Native status: Native to Hawaii  

Waimakanui: Hawaii’s Majestic Native Fern If you’re dreaming of creating an authentic Hawaiian garden or simply want to add some tropical elegance to your landscape, meet the waimakanui (Pteris excelsa) – one of Hawaii’s most stunning native ferns. This perennial beauty has been gracing the islands’ forests for centuries, and ...

Waimakanui: Hawaii’s Majestic Native Fern

If you’re dreaming of creating an authentic Hawaiian garden or simply want to add some tropical elegance to your landscape, meet the waimakanui (Pteris excelsa) – one of Hawaii’s most stunning native ferns. This perennial beauty has been gracing the islands’ forests for centuries, and it’s ready to bring that same natural magic to your garden.

What Makes Waimakanui Special?

The waimakanui, also known as the tall brake fern, is a true Hawaiian native that embodies the lush, tropical feel we all associate with the islands. This isn’t your typical houseplant fern – it’s a substantial species that can create dramatic focal points in shaded areas of your garden.

As a perennial fern, waimakanui returns year after year, slowly establishing itself as a cornerstone of your landscape. Its large, elegantly divided fronds create beautiful texture and movement, especially when caught by gentle trade winds.

Where Does Waimakanui Come From?

This remarkable fern is endemic to the Hawaiian Islands, meaning it exists nowhere else on Earth naturally. You’ll find it growing throughout Hawaii, where it has adapted perfectly to the islands’ unique climate and growing conditions.

Why Your Garden Will Love This Fern

Waimakanui brings several wonderful qualities to any landscape:

  • Authentic Hawaiian character: Perfect for native plant gardens and cultural landscapes
  • Low maintenance: Once established, it’s quite self-sufficient
  • Shade solution: Thrives in areas where many plants struggle
  • Year-round beauty: Provides consistent green foliage throughout the seasons
  • Conservation value: Supporting native species helps preserve Hawaiian biodiversity

Creating the Perfect Home for Waimakanui

This fern has some specific preferences, but they’re not too demanding once you understand what makes it happy:

Light conditions: Waimakanui prefers partial to full shade. Think of it as nature’s understory plant – it wants that dappled light filtering through trees rather than harsh, direct sunlight.

Soil needs: Well-draining soil that stays consistently moist is ideal. The fern can handle the facultative upland conditions, meaning it usually grows in non-wetland areas but can tolerate some wetness.

Climate requirements: Being a Hawaiian native, this fern thrives in USDA hardiness zones 10-12. If you live in a cooler climate, consider it for a greenhouse or as a special container plant you can protect during winter.

Planting and Care Tips

Getting your waimakanui off to a good start is key to long-term success:

  • Choose a spot with morning sun and afternoon shade, or filtered light all day
  • Ensure good drainage while maintaining consistent moisture
  • Mulch around the base to help retain moisture and suppress weeds
  • Be patient – ferns establish slowly but reward you with years of beauty
  • Source your plants responsibly from reputable native plant nurseries

Is Waimakanui Right for Your Garden?

This native Hawaiian fern is an excellent choice if you:

  • Live in a tropical or subtropical climate (zones 10-12)
  • Have shaded areas that need interesting foliage plants
  • Want to support native Hawaiian plant conservation
  • Appreciate the authentic look of indigenous landscapes
  • Enjoy low-maintenance perennial plants

However, waimakanui might not be the best fit if you live in cooler climates without protection, need plants for full-sun locations, or prefer flowering plants over foliage specimens.

A Living Piece of Hawaiian Heritage

When you plant waimakanui in your garden, you’re not just adding another pretty fern – you’re participating in the preservation of Hawaii’s unique botanical heritage. This endemic species represents thousands of years of evolution in isolation, creating something truly special that exists nowhere else on Earth.

Whether you’re in Hawaii looking to create an authentic native landscape or elsewhere dreaming of tropical paradise, waimakanui offers a meaningful connection to the islands’ natural beauty. Just remember to source your plants responsibly and provide the shade and moisture this elegant fern needs to flourish.

Wetland Status

The rule of seasoned gardeners and landscapers is to choose the "right plant for the right place" matching plants to their ideal growing conditions, so they'll thrive with less work and fewer inputs. But the simplicity of this catchphrase conceals how tricky plant selection is. While tags list watering requirements, there's more to the story.

Knowing a plant's wetland status can simplify the process by revealing the interaction between plants, water, and soil. Surprisingly, many popular landscape plants are wetland species! And what may be a wetland plant in one area, in another it might thrive in drier conditions. Also, it helps you make smarter gardening choices and grow healthy plants with less care and feeding, saving you time, frustration, and money while producing an attractive garden with greater ecological benefits.

Regions
Status
Moisture Conditions

Hawaii

FACU

Facultative Upland - Plants with this status usually occurs in non-wetlands but may occur in wetlands

Waimakanui

Classification

Group

Fern

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision
Division

Pteridophyta - Ferns

Subdivision
Class

Filicopsida

Subclass
Order

Polypodiales

Family

Pteridaceae E.D.M. Kirchn. - Maidenhair Fern family

Genus

Pteris L. - brake fern

Species

Pteris excelsa Gaudich. - waimakanui

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