North America Native Plant

White Cudweed

Botanical name: Pseudognaphalium leucocephalum

USDA symbol: PSLE4

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

White Cudweed: A Southwestern Native Worth Getting to Know If you’re looking for a low-maintenance native plant that brings soft texture and subtle beauty to your southwestern garden, white cudweed might just be your new best friend. This unassuming annual herb packs a surprising punch when it comes to supporting ...

White Cudweed: A Southwestern Native Worth Getting to Know

If you’re looking for a low-maintenance native plant that brings soft texture and subtle beauty to your southwestern garden, white cudweed might just be your new best friend. This unassuming annual herb packs a surprising punch when it comes to supporting local wildlife and adding year-round interest to drought-tolerant landscapes.

What Is White Cudweed?

White cudweed (Pseudognaphalium leucocephalum) is a charming native annual that belongs to the sunflower family. You might also see it listed under its former scientific name, Gnaphalium leucocephalum, in older gardening references. This hardy little forb – that’s gardening speak for a non-woody flowering plant – has been quietly thriving in the American Southwest long before any of us started thinking about water-wise gardening.

Where Does It Call Home?

This native beauty naturally occurs across Arizona, California, and New Mexico, making it perfectly adapted to the challenging conditions of the southwestern United States. It’s a true regional native, which means it’s evolved alongside local wildlife and climate patterns for thousands of years.

Why Your Garden Will Love White Cudweed

White cudweed brings several appealing qualities to the garden that make it worth considering:

  • Soft, silvery-white foliage that adds textural contrast to other plants
  • Small clusters of white, woolly flowers that have a cottony appearance
  • Compact growth habit that works well as ground cover or filler
  • Drought tolerance once established
  • Self-seeding capability for natural garden renewal

Garden Design Ideas

White cudweed shines in several garden settings. It’s particularly at home in:

  • Desert and xeriscape gardens where its drought tolerance is an asset
  • Native plant gardens alongside other southwestern species
  • Wildflower meadows for a naturalized look
  • Rock gardens where it can nestle between stones
  • As understory planting beneath taller native shrubs

Growing Conditions and Care

One of white cudweed’s greatest strengths is its easy-going nature. Here’s what it needs to thrive:

Sunlight: Full sun is preferred, though it can tolerate some light shade

Soil: Well-draining sandy or rocky soils work best. It’s not fussy about soil fertility and actually prefers lean conditions

Water: Drought tolerant once established, requiring minimal supplemental watering in most southwestern gardens

Climate: Hardy in USDA zones 8-10, making it perfect for most southwestern locations

Planting and Establishment Tips

Getting white cudweed started in your garden is refreshingly straightforward:

  • Direct seed in fall for spring germination
  • Scatter seeds on prepared soil surface – they need light to germinate
  • Water lightly until seedlings are established
  • Once mature, plants will self-seed for future generations
  • Minimal fertilization needed – too much can actually reduce flowering

Supporting Local Wildlife

As a native plant, white cudweed plays an important role in supporting local ecosystems. Its small flowers attract various beneficial insects, including small native bees and butterflies. The seeds also provide food for birds, while the plant structure offers shelter for small beneficial insects throughout its growing season.

Is White Cudweed Right for Your Garden?

White cudweed is an excellent choice for gardeners who want to support native ecosystems while enjoying a low-maintenance, drought-tolerant plant. It’s particularly valuable for those creating authentic southwestern landscapes or anyone looking to reduce garden water usage without sacrificing beauty.

Keep in mind that as an annual, white cudweed will complete its life cycle in one growing season. However, if you let it self-seed, you’ll likely see it return year after year, creating a sustainable cycle in your garden.

Whether you’re a seasoned native plant enthusiast or just beginning to explore water-wise gardening, white cudweed offers an approachable way to add authentic southwestern character to your landscape while supporting the local wildlife that makes our region so special.

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 leucocephalum (A. Gray) Anderb. - white cudweed

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