North America Native Plant

Sudetic Lousewort

Botanical name: Pedicularis sudetica interior

USDA symbol: PESUI2

Life cycle: perennial

Habit: forb

Native status: Native to Alaska  

Synonyms: Pedicularis interior (Hultén) Molau & D.F. Murray (PEIN2)  âš˜  Pedicularis sudetica Willd. var. gymnocephala Trautv. (PESUG)   

Sudetic Lousewort: Alaska’s Mysterious Native Wildflower If you’re passionate about native gardening and love a good botanical challenge, you might be intrigued by sudetic lousewort (Pedicularis sudetica interior). This fascinating perennial forb is one of Alaska’s lesser-known native treasures, though it’s definitely not your typical garden center find! What Is ...

Sudetic Lousewort: Alaska’s Mysterious Native Wildflower

If you’re passionate about native gardening and love a good botanical challenge, you might be intrigued by sudetic lousewort (Pedicularis sudetica interior). This fascinating perennial forb is one of Alaska’s lesser-known native treasures, though it’s definitely not your typical garden center find!

What Is Sudetic Lousewort?

Sudetic lousewort is a perennial forb, which simply means it’s a non-woody plant that comes back year after year. Unlike shrubs or trees, forbs like this one stay relatively low to the ground and don’t develop thick, woody stems. You might also see this plant referenced by its synonyms, including Pedicularis interior or Pedicularis sudetica var. gymnocephala in older botanical texts.

Don’t let the name lousewort put you off – it’s an old folk name that has nothing to do with actual lice! The name comes from an ancient belief that livestock grazing on these plants would get lice, though there’s no truth to this superstition.

Where Does It Grow?

This native beauty calls Alaska home and is found exclusively in the Last Frontier state. It’s perfectly adapted to Alaska’s unique climate and growing conditions, making it a true regional specialist.

Garden Potential and Growing Challenges

Here’s where things get interesting (and a bit challenging). Sudetic lousewort has a facultative wetland status, meaning it usually prefers wet conditions but can sometimes tolerate drier spots. This gives us a clue about where it might be happy in a garden setting.

However, there’s a big but here – very little information exists about successfully cultivating this particular plant. Many Pedicularis species are notoriously difficult to grow because they’re semi-parasitic, meaning they attach to the roots of other plants to supplement their nutrition. This makes them fascinating from a botanical perspective but tricky for home gardeners.

Should You Try Growing It?

Reasons you might want to try:

  • Supporting native Alaska ecosystems
  • Adding a unique, region-specific plant to your collection
  • Contributing to the conservation of lesser-known natives
  • The satisfaction of growing something truly unusual

Challenges to consider:

  • Very limited cultivation information available
  • Likely requires specific host plants due to semi-parasitic nature
  • May need very specific growing conditions
  • Probably not available from typical nurseries

Growing Conditions and Care

While specific growing information for sudetic lousewort is limited, we can make some educated guesses based on its wetland status and native habitat:

  • Moisture: Likely prefers consistently moist to wet soil conditions
  • Location: Probably thrives in Alaska’s unique climate conditions
  • Soil: May prefer the acidic, organic-rich soils typical of Alaska’s wetland areas

The Bottom Line

Sudetic lousewort is more of a botanical curiosity than a practical garden choice for most gardeners. If you’re in Alaska and passionate about native plant conservation, it might be worth researching further through local native plant societies or botanical gardens. However, for most gardeners, you’ll probably have better success with other Alaska native plants that have more established cultivation methods.

If you’re drawn to supporting native ecosystems but want something more garden-friendly, consider exploring other Alaska native wildflowers that are better understood and more readily available through specialty native plant nurseries.

Sometimes the most valuable plants are the mysterious ones that remind us there’s still so much to learn about our native flora!

Wetland Status

The rule of seasoned gardeners and landscapers is to choose the "right plant for the right place" matching plants to their ideal growing conditions, so they'll thrive with less work and fewer inputs. But the simplicity of this catchphrase conceals how tricky plant selection is. While tags list watering requirements, there's more to the story.

Knowing a plant's wetland status can simplify the process by revealing the interaction between plants, water, and soil. Surprisingly, many popular landscape plants are wetland species! And what may be a wetland plant in one area, in another it might thrive in drier conditions. Also, it helps you make smarter gardening choices and grow healthy plants with less care and feeding, saving you time, frustration, and money while producing an attractive garden with greater ecological benefits.

Regions
Status
Moisture Conditions

Alaska

FACW

Facultative Wetland - Plants with this status usually occurs in wetlands but may occur in non-wetlands

Sudetic Lousewort

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Scrophulariales

Family

Scrophulariaceae Juss. - Figwort family

Genus

Pedicularis L. - lousewort

Species

Pedicularis sudetica Willd. - sudetic lousewort

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