North America Native Plant

Wright’s Cudweed

Botanical name: Pseudognaphalium canescens thermale

USDA symbol: PSCAT

Life cycle: biennial

Habit: forb

Native status: Native to Canada âš˜ Native to the lower 48 states  

Synonyms: Gnaphalium canescens DC. ssp. thermale (E.E. Nelson) Stebbins & Keil (GNCAT)  âš˜  Gnaphalium microcephalum Nutt. var. thermale (E.E. Nelson) Cronquist (GNMIT)  âš˜  Gnaphalium microcephalum Nutt. ssp. thermale (E.E. Nelson) G.W. Douglas (GNMIT2)  âš˜  Gnaphalium thermale E.E. Nelson (GNTH)  âš˜  Pseudognaphalium microcephalum (Nutt.) Anderb. var. thermale (E.E. Nelson) Dorn (PSMIT)   

Wright’s Cudweed: A Native Wildflower Worth Knowing If you’re looking to add more native plants to your garden but want something a little different from the usual suspects, Wright’s cudweed (Pseudognaphalium canescens thermale) might just be the understated beauty you’ve been searching for. This native North American wildflower belongs to ...

Wright’s Cudweed: A Native Wildflower Worth Knowing

If you’re looking to add more native plants to your garden but want something a little different from the usual suspects, Wright’s cudweed (Pseudognaphalium canescens thermale) might just be the understated beauty you’ve been searching for. This native North American wildflower belongs to the diverse cudweed family, and while it may not have the flashy blooms of a sunflower, it brings its own quiet charm to naturalized landscapes.

What Exactly is Wright’s Cudweed?

Wright’s cudweed is a herbaceous plant—meaning it’s soft-stemmed rather than woody—that can live as either a biennial or perennial depending on growing conditions. As a forb, it lacks the woody tissue you’d find in shrubs or trees, instead producing fresh growth from buds at or below ground level each growing season.

This plant goes by several scientific names in botanical literature, having been reclassified multiple times as botanists have refined their understanding of plant relationships. You might see it listed under historical names like Gnaphalium canescens or Gnaphalium thermale in older gardening resources.

Where Wright’s Cudweed Calls Home

As a true native, Wright’s cudweed naturally occurs across a impressive swath of western North America. You’ll find it growing wild from the Canadian provinces of Alberta and British Columbia down through eleven western U.S. states: California, Colorado, Idaho, Montana, Nevada, Oregon, Utah, Washington, and Wyoming.

This extensive native range suggests the plant is quite adaptable to different climates and growing conditions across varied elevations and ecosystems.

Why Consider Wright’s Cudweed for Your Garden?

There are several compelling reasons to give this native plant a spot in your landscape:

  • True native credentials: Supporting local ecosystems by growing plants that naturally belong in your region
  • Low-maintenance nature: As a native, it’s adapted to local conditions and typically requires less water and care than non-native alternatives
  • Naturalized garden appeal: Perfect for wildflower meadows, prairie restorations, or informal native plant gardens
  • Wildlife habitat: Native plants generally provide better food and shelter resources for local wildlife than introduced species

Garden Design Ideas

Wright’s cudweed works best in naturalized settings rather than formal garden beds. Consider incorporating it into:

  • Native plant gardens and wildflower meadows
  • Prairie or grassland restoration projects
  • Informal border areas where a more natural look is desired
  • Habitat gardens designed to support local wildlife

The Challenge: Limited Growing Information

Here’s where things get a bit tricky for the home gardener. While Wright’s cudweed is undoubtedly a legitimate native species, detailed cultivation information specifically for this subspecies can be hard to come by. This isn’t uncommon with native wildflowers that aren’t widely cultivated commercially.

If you’re determined to grow Wright’s cudweed, your best bet is to:

  • Contact local native plant societies or botanical gardens in areas where it naturally occurs
  • Look for specialized native plant nurseries that might carry seeds or plants
  • Connect with university extension programs in western states where it’s native
  • Consider growing related Pseudognaphalium species that may be more readily available while you search for the specific subspecies

A Word of Caution

Before planting any native species, especially one that’s not commonly cultivated, make sure you’re sourcing it responsibly. Avoid collecting from wild populations, which can harm natural ecosystems. Instead, look for nursery-propagated plants or seeds from reputable sources.

The Bottom Line

Wright’s cudweed represents the fascinating diversity of North American native flora. While it may not be the easiest plant to find or grow, it offers gardeners interested in true regional natives an opportunity to support local ecosystems in a meaningful way. If you can’t locate this specific subspecies, don’t despair—there are many other beautiful native cudweeds and related plants that can provide similar ecological benefits with better availability and growing information.

Sometimes the most rewarding gardening adventures come from seeking out the plants that truly belong in our landscapes, even when they require a bit more detective work to track down.

Wright’s Cudweed

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

Asterales

Family

Asteraceae Bercht. & J. Presl - Aster family

Genus

Pseudognaphalium Kirp. - cudweed

Species

Pseudognaphalium canescens (DC.) W.A. Weber - Wright's cudweed

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