Native Plants

Pacific Buttercup

Ranunculus pacificus

USDA symbol: RAPA

perennial forb

Alaska: native

If you’re gardening in Alaska and looking for a truly local wildflower to brighten up your landscape, meet the Pacific buttercup (Ranunculus pacificus). This cheerful little native brings those classic bright yellow buttercup blooms right to your backyard – and it’s perfectly adapted to handle Alaska’s challenging climate. Pacific buttercup ...

Pacific Buttercup may be listed as rare in your area.
Global Conservation Status

Status: S3 | Vulnerable: Found only in a restricted range (even if abundant at some locations). Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals.

Pacific Buttercup: Alaska’s Charming Native Wildflower

If you’re gardening in Alaska and looking for a truly local wildflower to brighten up your landscape, meet the Pacific buttercup (Ranunculus pacificus). This cheerful little native brings those classic bright yellow buttercup blooms right to your backyard – and it’s perfectly adapted to handle Alaska’s challenging climate.

What Makes Pacific Buttercup Special

Pacific buttercup is a perennial forb, meaning it’s a soft-stemmed plant (not woody like shrubs) that comes back year after year. Like other members of the buttercup family, it produces those distinctive glossy yellow flowers that seem to glow in the garden. The blooms typically feature five petals with that characteristic shiny, almost waxy appearance that makes buttercups so recognizable.

You might occasionally see this plant listed under its scientific synonym, Ranunculus septentrionalis ssp. pacificus, but Ranunculus pacificus is the accepted name today.

Where Pacific Buttercup Calls Home

This buttercup is exclusively native to Alaska, making it a true local treasure for Alaskan gardeners. It’s found throughout various regions of the state, from coastal areas to interior locations.

  • Species observed
  • No observations

However, here’s something important to know: Pacific buttercup has a conservation status of S3, meaning it’s considered vulnerable. While not critically endangered, it’s rare enough that we should be mindful about how we source and grow it.

Should You Plant Pacific Buttercup?

If you’re gardening in Alaska, Pacific buttercup can be a wonderful addition to your native plant collection, but with some important caveats:

  • Perfect for Alaska gardens: It’s supremely cold-hardy (zones 1-4) and naturally adapted to your local conditions
  • Great for naturalized areas: Works beautifully in wildflower meadows, native plant gardens, or naturalized landscapes
  • Pollinator friendly: The flowers attract native bees, flies, and other local pollinators
  • Source responsibly: Due to its vulnerable status, only obtain plants or seeds from reputable native plant suppliers who source ethically

For gardeners outside Alaska, this plant simply won’t thrive in warmer climates, so you’re better off choosing buttercup species native to your region.

Growing Pacific Buttercup Successfully

The good news is that once you get your hands on responsibly sourced Pacific buttercup, it’s relatively low-maintenance:

Growing Conditions:

  • Prefers moist, well-draining soil
  • Thrives in partial shade to full sun
  • Naturally adapted to cool, short growing seasons
  • Benefits from consistent moisture during the growing season

Planting and Care Tips:

  • Plant in spring after the last hard frost
  • Space plants according to their mature spread (this varies, but give them room to naturalize)
  • Water regularly during establishment, then rely on natural rainfall in most Alaska locations
  • Allow plants to go dormant naturally in fall
  • Minimal fertilization needed – these plants are adapted to lean soils

Design Ideas for Your Garden

Pacific buttercup works wonderfully in:

  • Native wildflower gardens alongside other Alaska natives
  • Naturalized meadow areas where it can spread and self-seed
  • Rain gardens or areas with seasonal moisture
  • Edges of woodland gardens in partial shade

The Bottom Line

Pacific buttercup is a lovely choice for Alaska gardeners who want to support local ecosystems and enjoy beautiful native flowers. Just remember to source your plants responsibly given their vulnerable conservation status. When grown thoughtfully, these cheerful yellow blooms will reward you with years of low-maintenance beauty while supporting local pollinators and preserving Alaska’s natural heritage.

Before purchasing, always verify that your supplier sources plants ethically and sustainably – this helps ensure Pacific buttercup will continue brightening Alaska’s landscapes for generations to come.

Ranunculus pacificus is also known as...

Often we refer to plants by their common names. When shopping for plants the scientific name is the best way to positively identify the plant species you desire. But some plants have more than one name! While it doesn't happen often, nurseries might display one name while you're searching for another. Ranunculus pacificus is also known as:

Ranunculus septentrionalis ssp. pacificus Hultén | USDA symbol: RASEP2

Why do some plants have more than one name? Over time plant species may be renamed for a few reasons:

  1. Botanists in different regions named the same plant without knowing it had already been classified.
  2. A species was reclassified after scientific advances in, for example, DNA analysis.
  3. Slight variations within a species are sometimes mistakenly identified as entirely new species.

Classification

Group: Dicot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida - Dicotyledons
Subclass: Magnoliidae
Order: Ranunculales
Family: Ranunculaceae Juss. - Buttercup family
Genus: Ranunculus L. - buttercup

Species: Ranunculus pacificus (Hultén) L.D. Benson - Pacific buttercup

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