North America Native Plant

Towering Lousewort

Botanical name: Pedicularis bracteosa var. pachyrhiza

USDA symbol: PEBRP

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Pedicularis pachyrhiza Pennell (PEPA45)   

Towering Lousewort: A Pacific Northwest Native Worth the Challenge If you’re looking for a unique native wildflower that will make visitors to your garden do a double-take, towering lousewort (Pedicularis bracteosa var. pachyrhiza) might just be your perfect match. This Pacific Northwest native brings an almost otherworldly charm to naturalistic ...

Rare plant alert!

Region: Conservation status by state

Status: S5T3?: Status is uncertain but is somewhere between the following rankings: Inexact rank: ⚘ Subspecies or variety is 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. ⚘ Secure: At very low or no risk of extinction in the jurisdiction due to a very extensive range, abundant populations or occurrences, with little to no concern from declines or threats. ⚘

Towering Lousewort: A Pacific Northwest Native Worth the Challenge

If you’re looking for a unique native wildflower that will make visitors to your garden do a double-take, towering lousewort (Pedicularis bracteosa var. pachyrhiza) might just be your perfect match. This Pacific Northwest native brings an almost otherworldly charm to naturalistic gardens with its distinctive hooded flowers and impressive height.

What Makes Towering Lousewort Special

Towering lousewort is a perennial forb that truly lives up to its common name, often reaching impressive heights in mountain meadows and forest clearings. The plant produces striking flower spikes adorned with uniquely shaped blooms that look almost like tiny beaked birds perched along the stem. These flowers typically appear in shades of yellow, cream, or pale purple, creating a captivating display that’s hard to ignore.

As a native species to the lower 48 states, specifically Oregon and Washington, this plant has evolved perfectly for Pacific Northwest conditions and supports local ecosystems in ways that non-native alternatives simply can’t match.

Where Towering Lousewort Calls Home

This remarkable wildflower is endemic to the mountainous regions of Oregon and Washington, where it thrives in the cool, moist conditions of high-elevation meadows and forest edges. You’ll find it growing naturally in areas that experience significant seasonal moisture and cooler temperatures year-round.

A Note About Conservation

Towering lousewort has a somewhat unclear conservation status, which means we should approach cultivation thoughtfully. If you decide to grow this plant, make sure to source seeds or plants from reputable native plant nurseries that practice responsible collection methods. Never collect from wild populations.

Why Grow Towering Lousewort?

There are several compelling reasons to consider adding this native beauty to your landscape:

  • Pollinator magnet: The unique flower shape is perfectly designed for bumblebees and other long-tongued pollinators
  • Conversation starter: Its unusual appearance makes it an excellent focal point in native plant gardens
  • Ecosystem support: As a native species, it provides authentic habitat for local wildlife
  • Low maintenance: Once established in suitable conditions, it requires minimal intervention

Growing Conditions and Care

Let’s be honest – towering lousewort isn’t the easiest native plant to grow, but the reward is worth the effort for dedicated native plant enthusiasts.

Ideal Growing Conditions

  • Light: Partial shade to full sun
  • Soil: Moist, well-draining soil that doesn’t dry out completely
  • Climate: Cool conditions similar to its mountain habitat
  • Hardiness: Suitable for USDA zones 4-7
  • Moisture: Consistent moisture throughout the growing season

Planting and Care Tips

Success with towering lousewort requires patience and the right conditions. Plant in spring in a location that receives morning sun but some protection from intense afternoon heat. The soil should remain consistently moist but never waterlogged. Mulching around the plants can help maintain soil moisture and regulate temperature.

This plant performs best in naturalistic settings rather than formal garden beds. Consider incorporating it into a native plant meadow or along the edges of wooded areas where conditions more closely mimic its natural habitat.

Perfect Garden Companions

Towering lousewort pairs beautifully with other Pacific Northwest natives that share similar growing requirements. Consider planting it alongside native sedges, wild ginger, or woodland strawberry for a cohesive native plant community.

Is Towering Lousewort Right for Your Garden?

This plant is best suited for gardeners who are passionate about native species and have experience with more challenging plants. If you have a cool, consistently moist spot in your garden and want to support local pollinators with something truly unique, towering lousewort could be an excellent choice.

However, if you’re looking for a low-maintenance, adaptable plant for hot, dry conditions, you might want to consider other native options that are better suited to those conditions.

Remember, growing native plants like towering lousewort is about more than just adding beauty to your landscape – it’s about creating habitat, supporting biodiversity, and preserving the natural heritage of the Pacific Northwest for future generations to enjoy.

Towering 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 bracteosa Benth. - bracted lousewort

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