North America Native Plant

Calder’s Licorice-root

Botanical name: Ligusticum calderi

USDA symbol: LICA15

Life cycle: perennial

Habit: forb

Native status: Native to Alaska âš˜ Native to Canada  

Calder’s Licorice-Root: A Rare Arctic Treasure for Northern Gardens Meet Calder’s licorice-root (Ligusticum calderi), one of those special native plants that makes you feel like you’ve discovered a botanical secret. This perennial forb might not be the flashiest plant in your garden center, but for those gardening in the far ...

Rare plant alert!

Region: Conservation status by state

Status: S3S4: Status is uncertain but is somewhere between the following rankings: 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 ⚘ Apparently Secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the state or more than 10,000 individuals ⚘

Calder’s Licorice-Root: A Rare Arctic Treasure for Northern Gardens

Meet Calder’s licorice-root (Ligusticum calderi), one of those special native plants that makes you feel like you’ve discovered a botanical secret. This perennial forb might not be the flashiest plant in your garden center, but for those gardening in the far north, it represents a unique opportunity to grow something truly distinctive and locally native.

What Makes This Plant Special

Calder’s licorice-root is a member of the carrot family, and like many of its relatives, it’s an herbaceous perennial that dies back to the ground each winter and returns fresh each spring. As a forb, it lacks woody stems but makes up for it with its hardy, resilient nature – essential traits for surviving in some of North America’s most challenging climates.

Where You’ll Find It Growing Wild

This plant calls the northern reaches of North America home, specifically thriving in Alaska and British Columbia. It’s perfectly adapted to the unique growing conditions of these regions, from the long summer days to the harsh, snow-covered winters.

A Word About Rarity

Here’s something important to know: Calder’s licorice-root has a Global Conservation Status of S3S4, which means it’s considered somewhat rare or uncommon in its native range. This doesn’t mean you can’t grow it, but it does mean you should be thoughtful about how you source it.

If you’re interested in adding this plant to your garden, please only purchase from reputable native plant nurseries that responsibly propagate their stock rather than wild-harvesting. Never collect seeds or plants from wild populations.

Why Consider Growing Calder’s Licorice-Root?

For northern gardeners, especially those in Alaska and northern Canada, this plant offers several compelling reasons to include it in your landscape:

  • It’s genuinely native to your region, supporting local ecosystems
  • It’s adapted to extreme northern growing conditions
  • You’ll be helping preserve a rare species through cultivation
  • It connects your garden to the unique botanical heritage of the Arctic

Growing Challenges and Considerations

Let’s be honest – Calder’s licorice-root isn’t for everyone or every garden. Its very specific native range tells us it has particular growing requirements that may be difficult to replicate outside its natural habitat. The limited availability of specific growing information also suggests this isn’t a plant that’s been widely cultivated.

If you’re gardening outside of Alaska or northern British Columbia, you might want to consider other native Ligusticum species that are better suited to your local conditions and more readily available.

For the Adventurous Northern Gardener

If you’re determined to try growing this rare beauty, here are some general guidelines based on what we know about similar plants in the Ligusticum family:

  • Expect it to prefer cool, moist conditions
  • It likely appreciates some protection from intense sun
  • Good drainage is probably essential to prevent root rot
  • Be patient – rare plants often establish slowly
  • Consider it for specialized native plant gardens or naturalized areas

The Bottom Line

Calder’s licorice-root is a plant for the dedicated native plant enthusiast, particularly those gardening in its native range. While it may not be the easiest plant to grow or find, it offers the unique satisfaction of cultivating something truly special and helping preserve a piece of northern botanical heritage.

If you can source it responsibly and you’re up for the challenge, this rare native could be a meaningful addition to your northern garden. Just remember – with rarity comes responsibility, both in sourcing and in caring for this unique piece of Arctic flora.

Calder’s Licorice-root

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Apiales

Family

Apiaceae Lindl. - Carrot family

Genus

Ligusticum L. - licorice-root

Species

Ligusticum calderi Mathias & Constance - Calder's licorice-root

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