North America Native Plant

Arizona Cudweed

Botanical name: Pseudognaphalium arizonicum

USDA symbol: PSAR12

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Gnaphalium arizonicum A. Gray (GNAR)   

Arizona Cudweed: A Delicate Native Annual for Southwestern Gardens If you’re looking to add some understated charm to your southwestern garden while supporting local ecosystems, Arizona cudweed might just be the humble hero you’ve been searching for. This unassuming native annual brings a quiet elegance to naturalized spaces and offers ...

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 ⚘

Arizona Cudweed: A Delicate Native Annual for Southwestern Gardens

If you’re looking to add some understated charm to your southwestern garden while supporting local ecosystems, Arizona cudweed might just be the humble hero you’ve been searching for. This unassuming native annual brings a quiet elegance to naturalized spaces and offers valuable benefits to wildlife, even if it doesn’t shout for attention like some of its flashier garden neighbors.

Getting to Know Arizona Cudweed

Arizona cudweed (Pseudognaphalium arizonicum) is a native annual forb that calls the American Southwest home. You might also see it listed under its former scientific name, Gnaphalium arizonicum, in older gardening references. As a member of the sunflower family, this soft-textured plant adds a silvery-green presence to the landscape without demanding center stage.

Being a forb means Arizona cudweed is a non-woody flowering plant that completes its entire life cycle in one growing season. Don’t let its annual nature fool you into thinking it’s not worth planting – this little charmer can self-seed and return year after year when conditions are right.

Where Arizona Cudweed Calls Home

This native beauty has established itself naturally in Arizona and Texas, making it perfectly adapted to the unique challenges of southwestern growing conditions. Its natural range reflects its preference for the warm, arid climates that characterize much of the American Southwest.

Why Consider Arizona Cudweed for Your Garden?

Arizona cudweed brings several appealing qualities to the table:

  • Native credentials: As a true native, it supports local wildlife and requires minimal resources once established
  • Low maintenance: Annual plants often need less long-term care than perennials
  • Soft texture: The fuzzy, silvery-green foliage adds textural interest to plant combinations
  • Wildlife support: Native plants typically provide food and habitat for local insects and birds
  • Drought tolerance: Well-adapted to arid conditions once established

A Word About Rarity

Before you rush out to plant Arizona cudweed everywhere, it’s important to note that this species has a conservation status of S3S4, meaning it may be somewhat vulnerable in parts of its range. If you choose to grow it, please source your seeds or plants from reputable native plant nurseries that practice responsible collection methods. Never harvest seeds or plants from wild populations.

Perfect Garden Settings

Arizona cudweed shines in naturalized gardens, prairie restorations, and wildlife-focused landscapes. It’s not necessarily the plant for formal flower beds or manicured borders, but it excels in:

  • Native plant gardens
  • Xeriscapes and drought-tolerant landscapes
  • Wildlife habitat gardens
  • Meadow-style plantings
  • Restoration projects

Growing Arizona Cudweed Successfully

The key to success with Arizona cudweed lies in mimicking its natural habitat. This plant thrives in the warm, dry conditions of USDA hardiness zones 8-10, where winters are mild and summers can be quite hot.

Ideal Growing Conditions

  • Sunlight: Full sun to partial shade
  • Soil: Well-draining soils, including sandy or rocky conditions
  • Water: Low to moderate water needs; drought tolerant once established
  • Climate: Warm, arid to semi-arid conditions

Planting and Care Tips

Since Arizona cudweed is an annual, you’ll want to plant seeds in late fall or early spring for best results. The seeds are quite small, so scatter them lightly over prepared soil and barely cover them.

  • Prepare the planting area by removing weeds and lightly cultivating the soil
  • Sow seeds when soil temperatures are cool to moderate
  • Keep soil lightly moist until germination occurs
  • Once established, reduce watering and let natural rainfall do most of the work
  • Allow some plants to go to seed for natural reseeding

Supporting Pollinators and Wildlife

While Arizona cudweed may look modest, it likely provides valuable resources for native insects and other small wildlife. Native plants have co-evolved with local fauna and often support specialist species that can’t survive on non-native alternatives. By including plants like Arizona cudweed in your garden, you’re creating stepping stones of habitat that help maintain biodiversity.

Is Arizona Cudweed Right for Your Garden?

Arizona cudweed is an excellent choice if you’re gardening in its native range and want to create habitat-focused, low-maintenance plantings. It’s particularly valuable for gardeners interested in supporting native ecosystems and those working with challenging, dry sites.

However, if you’re looking for showy flowers or dramatic foliage, you might want to pair Arizona cudweed with more visually striking native companions. Think of it as a supporting player that adds depth and authenticity to your native plant cast.

Remember to source this plant responsibly due to its conservation status, and consider it as part of a diverse native plant community rather than a solo act. Your local wildlife – and your water bill – will thank you for choosing this humble but hardworking southwestern native.

Arizona 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 arizonicum (A. Gray) Anderb. - Arizona cudweed

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