Tall Buttercup (Ranunculus acris var. frigidus): A Cold-Climate Buttercup with Limited Garden Appeal
If you’ve stumbled across the name Ranunculus acris var. frigidus, also known as tall buttercup, you’re looking at a rather mysterious member of the buttercup family. This perennial forb has made its way to Alaska’s wild spaces, but whether it belongs in your garden is a question worth exploring.
What Is Tall Buttercup?
Ranunculus acris var. frigidus is a non-native perennial that has established itself in Alaska’s landscape. As a forb, it’s an herbaceous plant without woody stems—think of it as your typical wildflower structure. This variety is sometimes known by the scientific synonyms Ranunculus grandis Honda or Ranunculus grandis Honda var. austrokurilensis, which gives you a hint at its complex taxonomic history.
Where You’ll Find It
Currently, this tall buttercup variety calls Alaska home, where it has naturalized and reproduces without human intervention. It’s adapted to survive Alaska’s challenging climate conditions, earning its frigidus name (meaning cold in Latin).
- Species observed
- No observations
Should You Grow Tall Buttercup?
Here’s where things get tricky. While this plant isn’t listed as invasive or noxious, there’s remarkably little information available about its garden performance, care requirements, or ecological impact. This lack of data makes it difficult to recommend for home gardeners.
Consider these points before planting:
- Limited information about growing conditions and care requirements
- Unknown wildlife and pollinator benefits
- Uncertain hardiness zones outside of Alaska
- No clear data on garden performance or aesthetic value
Better Native Alternatives
Instead of gambling on this poorly-documented variety, consider these native alternatives that offer similar spring color:
- Native buttercup species indigenous to your region
- Local wildflowers with yellow blooms
- Well-documented native perennials suited to your climate
Conservation Status
This variety has a global conservation status of S5T3?, which indicates undefined or uncertain status. This uncertainty extends to most aspects of the plant’s ecology and garden suitability.
The Bottom Line
While Ranunculus acris var. frigidus might sound intriguing, the lack of available information about its cultivation, care, and garden value makes it a poor choice for most gardeners. Your time and garden space are better invested in well-documented native plants that support local ecosystems and provide reliable garden performance.
If you’re specifically interested in cold-hardy buttercups, research native species in your area or consult with local native plant societies for better alternatives that will thrive in your garden while supporting local wildlife.