North America Native Plant

Islandfern

Botanical name: Olfersia

USDA symbol: OLFER

Life cycle: perennial

Habit: forb

Native status: Native to Puerto Rico  

Discovering the Islandfern: A Puerto Rican Native Worth Knowing If you’re passionate about native plants and have a soft spot for unique ferns, you might be curious about the islandfern (Olfersia). This perennial fern is a true Puerto Rican native, adding a touch of tropical authenticity to any garden lucky ...

Discovering the Islandfern: A Puerto Rican Native Worth Knowing

If you’re passionate about native plants and have a soft spot for unique ferns, you might be curious about the islandfern (Olfersia). This perennial fern is a true Puerto Rican native, adding a touch of tropical authenticity to any garden lucky enough to host it.

What Makes Islandfern Special?

The islandfern belongs to a small genus that calls Puerto Rico home. As a native species, it has evolved alongside the island’s unique ecosystem, making it perfectly adapted to local conditions. This isn’t your typical garden-center fern – it’s a genuine piece of Puerto Rican botanical heritage.

Where You’ll Find Islandfern

Currently, islandfern is found exclusively in Puerto Rico, where it grows as part of the island’s diverse native flora. Its limited geographic range makes it quite special for those interested in regional plant communities.

Is Islandfern Right for Your Garden?

Here’s where things get a bit tricky – while islandfern sounds like a fascinating addition to any native plant collection, detailed growing information is surprisingly scarce. This limited availability of cultivation information suggests it might be:

  • A specialized species with very specific growing requirements
  • Rarely cultivated outside its native habitat
  • Possibly challenging to source from nurseries

The Reality Check

If you’re dreaming of adding islandfern to your garden, you’ll want to temper your expectations. The lack of readily available growing guides and nursery sources suggests this might be more of a admire in nature plant rather than a grow in your backyard option, especially if you’re gardening outside of Puerto Rico.

Alternative Native Fern Options

If you’re drawn to the idea of growing native ferns but islandfern isn’t practical for your situation, consider researching other fern species native to your specific region. Every area has its own wonderful selection of native ferns that are better documented and more readily available for home cultivation.

The Bottom Line

While islandfern represents an interesting piece of Puerto Rico’s native plant puzzle, its limited cultivation information and narrow geographic range make it more of a botanical curiosity than a practical garden choice for most gardeners. If you’re specifically gardening in Puerto Rico and have access to responsibly sourced plants, it could be worth exploring further. Otherwise, you’ll likely have better success focusing on well-documented native ferns from your local area.

Remember, the best native plant for your garden is always one that’s truly native to your specific region and has the growing information you need to help it thrive!

Islandfern

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

Olfersia Raddi - islandfern

Species

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