Goldback fern
Pentagramma triangularis
Last reviewed: November 2026
Goldback fern (Pentagramma triangularis) is a perennial fern native to CA, ID, OR, WA.

Toxicity unknown
Goldback fern (Pentagramma triangularis) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.
Light
part shade
Water
low
Size
4"–10" H × 6"–12" W
Bloom
N/A
Native to
CA, ID, OR, WA
Before you buy
Your city may pay you to plant this
Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 461 programs across 44 states, each with a link to the provider and the date we last checked it.
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Browse plants for this ecoregion
Goldback fern is a small evergreen fern with triangular fronds that have a golden, powdery coating on the underside. It grows tucked into rock crevices and shaded slopes, curling up during dry periods and reviving with moisture.
Growing Goldback fern
Grow Goldback fern in part shade and low water. Mature plants reach 4 to 10 inches tall and spread 6 to 12 inches wide.
Wildlife value
As a spore-producing fern it has no flowers to offer pollinators, but its dense low growth provides shelter for small insects and shade-loving wildlife.
Common questions
- How much sun does Goldback fern need?
- Goldback fern grows best in part shade conditions.
- Where is Goldback fern native?
- Goldback fern (Pentagramma triangularis) is native to CA, ID, OR, WA, per vouchered herbarium specimen records and regional native plant society lists.
Native range data from vouchered herbarium specimen records and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
If something looks wrong
Common plant problems, and what to check first
These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.
- It is dying right after planting
- Leaves turning yellow
- Wilting even though I watered it
- Brown crispy leaf tips
- Bugs on the plant
Ready to grow Goldback fern? Add it to your garden in the Pollinator Patch App to track it and get season-by-season care guidance.
