North America Native Plant

Birdwing Treefern

Botanical name: Cyathea borinquena

USDA symbol: CYBO3

Life cycle: perennial

Habit: shrub

Native status: Native to Puerto Rico  

Synonyms: Alsophila boringuena Maxon (ALBO2)  âš˜  Trichipteris borinquena (Maxon) R. Tryon (TRBO4)   

Birdwing Treefern: A Magnificent Native Fern for Tropical Gardens If you’re looking to add some serious tropical drama to your garden, the birdwing treefern might just be your new best friend. This stunning native Puerto Rican fern brings an instant wow factor that’ll have your neighbors wondering if you’ve secretly ...

Birdwing Treefern: A Magnificent Native Fern for Tropical Gardens

If you’re looking to add some serious tropical drama to your garden, the birdwing treefern might just be your new best friend. This stunning native Puerto Rican fern brings an instant wow factor that’ll have your neighbors wondering if you’ve secretly transported a piece of the rainforest to your backyard.

Meet the Birdwing Treefern

Known botanically as Cyathea borinquena, the birdwing treefern is a perennial fern that’s as impressive as its name suggests. You might also see it listed under its former scientific names, Alsophila boringuena or Trichipteris borinquena, but don’t let the name changes fool you – this is the same spectacular plant.

This isn’t your average houseplant fern. We’re talking about a substantial tree fern that can create genuine architectural interest in your garden. Think of it as nature’s own living sculpture, complete with gracefully arching fronds that seem to dance in the slightest breeze.

Where It Calls Home

The birdwing treefern is a proud native of Puerto Rico, where it naturally thrives in the island’s lush mountainous regions. This makes it a fantastic choice for gardeners in Puerto Rico who want to embrace their local flora and support native plant communities.

Why Your Garden Will Love This Fern

There are several compelling reasons to consider adding a birdwing treefern to your landscape:

  • Instant tropical ambiance: Nothing says tropical paradise quite like the dramatic silhouette of a tree fern
  • Year-round interest: As a perennial, it provides consistent structure and beauty throughout the seasons
  • Native plant benefits: Supporting local ecosystems while reducing maintenance needs
  • Unique focal point: Perfect as a specimen plant or centerpiece in shade gardens
  • Low pollinator competition: Since ferns don’t flower, they won’t compete with your flowering plants for pollinator attention

Perfect Garden Settings

The birdwing treefern absolutely shines in:

  • Tropical and subtropical gardens
  • Woodland or forest garden settings
  • Shaded courtyards and patios
  • Rain gardens or areas with consistent moisture
  • As an understory plant beneath taller trees

Its facultative wetland status means it’s quite adaptable – happy in both moist and moderately dry conditions, though it definitely prefers the moister side of life.

Growing Your Birdwing Treefern Successfully

Here’s the thing about tree ferns: they’re not particularly fussy, but they do have some specific preferences that you’ll want to respect.

Climate Requirements

This tropical beauty thrives in USDA hardiness zones 10-11, making it perfect for year-round outdoor growing in truly warm climates. If you’re outside these zones, you might consider it as a dramatic container plant that can be moved indoors during colder months.

Ideal Growing Conditions

Think tropical forest floor and you’ll get the right idea:

  • Light: Partial shade to full shade – direct sun can scorch those beautiful fronds
  • Moisture: Consistently moist (but not waterlogged) soil
  • Humidity: High humidity levels are greatly appreciated
  • Soil: Well-draining, organic-rich soil that retains some moisture
  • Protection: Shelter from strong winds that can damage the fronds

Planting and Care Tips

Getting your birdwing treefern established is pretty straightforward:

  • Choose a protected, partially shaded location
  • Prepare the soil with plenty of organic matter like compost or leaf mold
  • Water regularly, especially during dry periods
  • Mulch around the base to help retain moisture and regulate soil temperature
  • Remove dead or damaged fronds to keep the plant looking its best
  • Be patient – tree ferns aren’t speed demons, but the wait is worth it

Is This Fern Right for You?

The birdwing treefern is an excellent choice if you’re gardening in Puerto Rico or similar tropical climates and want to embrace native plants. It’s particularly perfect for gardeners who appreciate dramatic foliage and don’t mind providing consistent moisture.

However, it might not be the best fit if you’re looking for a low-water plant or live in an area with frequent strong winds. Additionally, gardeners in cooler climates will need to treat it as a container plant or greenhouse specimen.

For Puerto Rican gardeners especially, choosing native plants like the birdwing treefern is a wonderful way to create a garden that’s both beautiful and ecologically responsible. You’ll be supporting local wildlife habitat while enjoying a truly spectacular plant that’s perfectly adapted to your climate.

Ready to bring a touch of the rainforest to your garden? The birdwing treefern might just be the dramatic statement piece your landscape has been waiting for.

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

Caribbean

FAC

Facultative - Plants with this status can occur in wetlands and non-wetlands

Birdwing Treefern

Classification

Group

Fern

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision
Division

Pteridophyta - Ferns

Subdivision
Class

Filicopsida

Subclass
Order

Polypodiales

Family

Cyatheaceae Kaulf. - Tree Fern family

Genus

Cyathea Sm. - treefern

Species

Cyathea borinquena (Maxon) Domin - birdwing treefern

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