North America Native Plant

Thicket Creepingfern

Botanical name: Odontosoria aculeata

USDA symbol: ODAC

Life cycle: perennial

Habit: forb

Native status: Native to Puerto Rico âš˜ Native to the U.S. Virgin Islands  

Thicket Creepingfern: A Delicate Caribbean Native for Tropical Gardens Meet the thicket creepingfern (Odontosoria aculeata), a charming little fern that brings a touch of tropical elegance to shaded garden spaces. While this native Caribbean beauty might not be on every gardener’s radar, it’s definitely worth getting to know – especially ...

Thicket Creepingfern: A Delicate Caribbean Native for Tropical Gardens

Meet the thicket creepingfern (Odontosoria aculeata), a charming little fern that brings a touch of tropical elegance to shaded garden spaces. While this native Caribbean beauty might not be on every gardener’s radar, it’s definitely worth getting to know – especially if you’re lucky enough to garden in the warmest corners of the United States.

What Exactly Is Thicket Creepingfern?

Don’t let the technical classification fool you – thicket creepingfern is actually a delightful perennial fern that creates lovely textured groundcover. Despite being labeled as a forb in some databases (which refers to non-woody plants), this is definitely a true fern that produces the characteristic fronds we associate with these ancient plants.

What makes this fern special is its finely divided, lacy fronds that create an almost ethereal appearance in the garden. It’s the kind of plant that adds that something extra to shaded areas without being too flashy or demanding attention.

Where Does It Call Home?

Thicket creepingfern is a proud native of the Caribbean, specifically calling Puerto Rico and the U.S. Virgin Islands home. This tropical heritage means it’s perfectly adapted to warm, humid conditions and won’t tolerate cold temperatures.

Should You Grow Thicket Creepingfern?

The answer depends entirely on where you live! If you’re gardening in USDA zones 10-11 (think southern Florida, Hawaii, or similar tropical climates), this native fern could be a wonderful addition to your landscape. Here’s why you might want to consider it:

  • It’s a true native species, supporting local ecosystems
  • Provides beautiful, fine-textured groundcover for shaded areas
  • Low-maintenance once established in the right conditions
  • Adds authentic tropical character to native plant gardens

However, if you live anywhere that experiences frost or extended cool periods, this isn’t the fern for you. It simply won’t survive outside of consistently warm, tropical conditions.

Creating the Right Environment

If you’re in the right climate zone, thicket creepingfern appreciates conditions that mimic its native Caribbean habitat:

  • Light: Partial to full shade – protect it from direct sunlight
  • Moisture: Consistently moist (but not waterlogged) soil
  • Humidity: High humidity levels, typical of tropical environments
  • Temperature: Warm temperatures year-round (zones 10-11 only)

Garden Design Ideas

This delicate fern works beautifully as:

  • Understory planting beneath larger tropical plants
  • Groundcover in shaded native plant gardens
  • Accent plant in tropical landscape designs
  • Natural addition to woodland-style gardens in tropical zones

A Word About Wildlife

While we don’t have extensive data on thicket creepingfern’s specific wildlife benefits, most native ferns provide some level of habitat value. They may offer shelter for small creatures and contribute to the overall biodiversity of native plant communities.

The Bottom Line

Thicket creepingfern is one of those special plants that’s perfect for the right situation but completely wrong for most North American gardens. If you’re blessed with a tropical climate and want to incorporate more native species into your landscape, this charming little fern deserves consideration. Just remember – it’s definitely a warm-weather-only kind of plant!

For gardeners in cooler climates who are drawn to the delicate, lacy appearance of thicket creepingfern, consider exploring native fern species appropriate for your region instead. Every area has its own wonderful native ferns that can provide similar textural interest while being perfectly suited to local conditions.

Thicket Creepingfern

Classification

Group

Fern

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision
Division

Pteridophyta - Ferns

Subdivision
Class

Filicopsida

Subclass
Order

Polypodiales

Family

Dennstaedtiaceae Lotsy - Bracken Fern family

Genus

Odontosoria Fée - creepingfern

Species

Odontosoria aculeata (L.) J. Sm. - thicket creepingfern

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