North America Native Plant

Showy Tonguefern

Botanical name: Elaphoglossum decoratum

USDA symbol: ELDE

Life cycle: perennial

Habit: forb

Native status: Native to Puerto Rico  

Showy Tonguefern: A Tropical Epiphytic Beauty for Your Garden Meet the showy tonguefern (Elaphoglossum decoratum), a charming little fern that’s anything but ordinary. Despite what its name might suggest, this isn’t your typical ground-dwelling garden fern. Instead, it’s an epiphyte – a plant that makes its home perched on other ...

Showy Tonguefern: A Tropical Epiphytic Beauty for Your Garden

Meet the showy tonguefern (Elaphoglossum decoratum), a charming little fern that’s anything but ordinary. Despite what its name might suggest, this isn’t your typical ground-dwelling garden fern. Instead, it’s an epiphyte – a plant that makes its home perched on other plants, soaking up moisture and nutrients from the air around it.

What Exactly Is a Showy Tonguefern?

The showy tonguefern belongs to the fascinating world of epiphytic ferns, plants that have mastered the art of living without soil. This perennial fern produces simple, tongue-shaped fronds that give it both its common name and its distinctive appearance. Unlike many ferns with their intricate, lacy foliage, Elaphoglossum decoratum keeps things elegantly simple with its smooth, undivided leaves.

Where Does It Call Home?

This tropical beauty is native to Puerto Rico, where it thrives in the island’s warm, humid climate. In its natural habitat, you’ll find it growing on tree trunks and branches, creating living sculptures in the forest canopy.

Is It Beneficial for Your Garden?

If you’re gardening in tropical zones (USDA hardiness zones 10-12), the showy tonguefern can be a delightful addition to your plant collection. Here’s what makes it special:

  • Adds unique texture and form to epiphyte gardens
  • Perfect for creating natural-looking tree displays
  • Low-maintenance once established in proper conditions
  • Brings a touch of tropical rainforest to your space
  • Excellent for container growing in controlled environments

How to Identify Showy Tonguefern

Spotting a showy tonguefern is relatively straightforward once you know what to look for:

  • Frond shape: Simple, tongue-like leaves that are undivided
  • Growth pattern: Epiphytic growth, naturally mounting on other plants
  • Size: Small to medium-sized fern, perfect for intimate garden spaces
  • Texture: Smooth, leathery fronds unlike the delicate appearance of many ferns

Growing Conditions and Care

While this fern is relatively low-maintenance, it does have some specific needs that reflect its tropical, epiphytic nature:

  • Light: Bright, filtered light – think dappled shade rather than deep darkness or blazing sun
  • Humidity: High humidity is crucial for success
  • Growing medium: Well-draining, epiphytic mix or mounted on cork bark or tree fern fiber
  • Watering: Regular misting to maintain moisture without waterlogging
  • Temperature: Warm temperatures year-round (tropical zones only)

Is This Fern Right for Your Garden?

The showy tonguefern is perfect for gardeners who:

  • Live in tropical climates or can provide greenhouse conditions
  • Enjoy collecting unique, low-maintenance plants
  • Want to create authentic tropical garden displays
  • Appreciate the beauty of simple, elegant plant forms

However, it might not be the best choice if you’re looking for a traditional ground-cover fern or if you garden in cooler climates without the ability to provide consistent warmth and humidity.

Whether you mount it on a tree, display it in a hanging container, or include it in a tropical plant collection, the showy tonguefern offers a unique way to bring a piece of Puerto Rico’s natural beauty into your garden space.

Showy Tonguefern

Classification

Group

Fern

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision
Division

Pteridophyta - Ferns

Subdivision
Class

Filicopsida

Subclass
Order

Polypodiales

Family

Dryopteridaceae Herter - Wood Fern family

Genus

Elaphoglossum Schott ex J. Sm. - tonguefern

Species

Elaphoglossum decoratum (Kunze) T. Moore - showy tonguefern

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