North America Native Plant

Pale Silverback Fern

Botanical name: Pentagramma pallida

USDA symbol: PEPA40

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Pityrogramma pallida (Weath.) K.S. Alt & V.E. Grant (PIPA5)  âš˜  Pityrogramma triangularis (Kaulf.) Maxon var. pallida Weath. (PITRP)   

Pale Silverback Fern: California’s Shimmering Native Treasure Meet the pale silverback fern (Pentagramma pallida), a captivating California native that’s like nature’s own glitter bomb. This charming little fern doesn’t just blend into the background – it practically sparkles with its distinctive silvery-white undersides that catch the light like tiny mirrors. ...

Rare plant alert!

Region: Conservation status by state

Status: S3?: Status is uncertain but is somewhere between the following rankings: Inexact rank: ⚘ 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 ⚘

Pale Silverback Fern: California’s Shimmering Native Treasure

Meet the pale silverback fern (Pentagramma pallida), a captivating California native that’s like nature’s own glitter bomb. This charming little fern doesn’t just blend into the background – it practically sparkles with its distinctive silvery-white undersides that catch the light like tiny mirrors.

What Makes This Fern Special

The pale silverback fern is a true California original, found nowhere else in the world. This perennial beauty belongs to a group of ferns known for their powdery undersides, but Pentagramma pallida takes the cake with its particularly striking pale coating called farina. The triangular fronds may be small, but they pack a visual punch that’s hard to ignore.

You might also see this plant listed under its former scientific names, including Pityrogramma pallida or Pityrogramma triangularis var. pallida, but don’t let the name changes fool you – it’s the same shimmering wonder.

Where You’ll Find It

This fern calls California home and only California. It’s perfectly adapted to the Golden State’s unique climate and rocky terrain, thriving in the nooks and crannies of cliff faces and rocky outcrops throughout the state’s coastal and inland mountain ranges.

A Word About Rarity

Here’s something important to know: the pale silverback fern has a somewhat uncertain conservation status, with experts still working to fully understand its population health. While it’s not officially listed as endangered, this uncertainty means we should treat it with extra care and respect. If you’re lucky enough to encounter this fern in the wild, admire it but don’t disturb it.

Garden Appeal and Benefits

While the pale silverback fern doesn’t offer nectar for pollinators (ferns reproduce via spores, not flowers), it brings other valuable qualities to a garden:

  • Unique visual interest with its shimmering, pale undersides
  • Excellent drought tolerance once established
  • Perfect for rock gardens and naturalistic landscapes
  • Adds authentic California native character to plantings
  • Requires minimal maintenance and water

Growing Conditions

If you’re considering adding this beauty to your garden, it thrives in USDA hardiness zones 8-10 and prefers:

  • Well-draining, rocky or sandy soils
  • Partial shade to filtered sunlight
  • Minimal water once established
  • Protection from intense afternoon sun

The Responsible Approach

Given its uncertain conservation status, we strongly recommend only obtaining pale silverback fern from reputable native plant nurseries that propagate their stock responsibly. Never collect from wild populations, and always purchase from sources that can verify their plants weren’t wild-collected.

This approach ensures you can enjoy this remarkable fern while helping protect wild populations for future generations. After all, some of nature’s most beautiful treasures are worth the extra effort to source responsibly.

Perfect for the Right Garden

The pale silverback fern is ideal for gardeners who appreciate subtle beauty and want to create authentic California native landscapes. It’s particularly stunning in rock gardens, Mediterranean-style plantings, and drought-tolerant designs where its unique silvery shimmer can really shine.

Just remember: less is more with this fern. It’s adapted to lean conditions, so resist the urge to pamper it with rich soil or frequent watering. Sometimes the most beautiful plants are the ones that ask for the least but give back the most in terms of character and charm.

Pale Silverback 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 pallida (Weath.) Yatsk., Windham & E. Wollenw. - pale silverback fern

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