North America Native Plant

Goldback Fern

Botanical name: Pentagramma triangularis triangularis

USDA symbol: PETRT

Life cycle: perennial

Habit: forb

Native status: Native to Canada âš˜ Native to the lower 48 states  

Synonyms: Pentagramma triangularis (Kaulf.) Yatsk., Windham & E. Wollenw. ssp. rebmanii Winner & M.G. Simpson (PETRR)  âš˜  Pentagramma triangularis (Kaulf.) Yatsk., Windham & E. Wollenw. ssp. semipallida (J.T. Howell) Yatsk., Windham & E. Wollenw. (PETRS)  âš˜  Pityrogramma semipallida J.T. Howell, nom. inq. (PISE6)  âš˜  Pityrogramma triangularis (Kaulf.) Maxon (PITR)  âš˜  Pityrogramma triangularis (Kaulf.) Maxon var. semipallida J.T. Howell (PITRS)  âš˜  Pityrogramma triangularis (Kaulf.) Maxon var. viridis Hoover (PITRV)   

Goldback Fern: A Golden Treasure for Your Dry Shade Garden Looking for a unique native fern that thrives where other plants struggle? Meet the goldback fern (Pentagramma triangularis triangularis), a charming little native that’s about to become your new favorite for those tricky dry, shady spots in your garden. What ...

Rare plant alert!

Region: Conservation status by state

Status: S5T2T3: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘ Subspecies or variety is vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals. ⚘ Secure: At very low or no risk of extinction in the jurisdiction due to a very extensive range, abundant populations or occurrences, with little to no concern from declines or threats. ⚘

Goldback Fern: A Golden Treasure for Your Dry Shade Garden

Looking for a unique native fern that thrives where other plants struggle? Meet the goldback fern (Pentagramma triangularis triangularis), a charming little native that’s about to become your new favorite for those tricky dry, shady spots in your garden.

What Makes Goldback Fern Special

The goldback fern gets its common name from the stunning golden-yellow waxy powder that coats the undersides of its triangular fronds. This isn’t just for show – that golden farina helps the plant conserve moisture in its naturally dry habitats. The fronds themselves are small and distinctly triangular, creating an elegant, delicate appearance that adds texture and interest to any garden space.

Where It Calls Home

This perennial fern is a true native of western North America, naturally occurring in British Columbia, California, Idaho, Nevada, Oregon, and Washington. It’s perfectly adapted to the unique climate conditions of these regions, making it an excellent choice for gardeners looking to work with nature rather than against it.

Why You’ll Want to Grow Goldback Fern

Here’s what makes this little fern a garden gem:

  • Thrives in dry shade where many plants fail
  • Extremely low water requirements once established
  • Unique golden undersides add year-round visual interest
  • Perfect for rock gardens and natural landscapes
  • Requires virtually no maintenance
  • Supports local ecosystems as a native species

Garden Design Ideas

Goldback fern shines in drought-tolerant gardens, native plant landscapes, and rock gardens. Its small size and distinctive triangular fronds make it perfect for tucking into rocky crevices, along stone walls, or as groundcover in dry, shaded areas under trees or large shrubs. It pairs beautifully with other native drought-tolerant plants and adds a soft, textural contrast to harder landscape elements.

Growing Conditions and Care

One of the best things about goldback fern is how easy it is to grow – as long as you give it what it naturally wants:

  • Light: Partial to full shade
  • Soil: Well-draining, rocky or sandy soil
  • Water: Low water needs; drought tolerant once established
  • Climate: Hardy in USDA zones 7-10

Planting and Care Tips

Getting your goldback fern established is straightforward:

  • Plant in fall or early spring for best establishment
  • Choose a spot with good drainage – avoid areas that stay wet
  • Rocky crevices or sloped areas work particularly well
  • Water sparingly during the first growing season
  • Once established, it typically needs no supplemental watering
  • No fertilization needed – it prefers lean soils

Important Conservation Note

Goldback fern has a conservation status that indicates some populations may be uncommon in certain areas. If you’re interested in adding this beauty to your garden, please make sure to purchase from reputable native plant nurseries that use responsibly sourced, nursery-propagated stock rather than wild-collected plants. This helps protect wild populations while still allowing you to enjoy this wonderful native species.

The Bottom Line

If you’ve been struggling to find plants for those challenging dry, shady spots, goldback fern might just be your answer. This low-maintenance native offers unique beauty, supports local ecosystems, and thrives where many other plants would simply give up. Plus, there’s something undeniably magical about discovering those golden undersides catching the light in your garden – it’s like finding hidden treasure every time you look.

Goldback Fern

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

Pentagramma Yatsk., Windham & E. Wollenw. - goldback fern

Species

Pentagramma triangularis (Kaulf.) Yatsk., Windham & E. Wollenw. - goldback fern

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