North America Native Plant

Metcalf’s Groundsel

Botanical name: Packera neomexicana var. metcalfei

USDA symbol: PANEM2

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Synonyms: Senecio metcalfei Greene (SEME7)  ⚘  Senecio neomexicanus A. Gray var. metcalfei (Greene) T.M. Barkley (SENEM)   

Metcalf’s Groundsel: A Native Southwestern Treasure If you’re looking to add authentic southwestern character to your garden, Metcalf’s groundsel might just be the native gem you’ve been searching for. This perennial forb brings a touch of wild beauty that’s perfectly adapted to the arid landscapes of the American Southwest. What ...

Rare plant alert!

Region: Conservation status by state

Status: S5T3?Q: Status is uncertain but is somewhere between the following rankings: Inexact rank: ⚘ Uncertain taxonomy: ⚘ 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. ⚘

Metcalf’s Groundsel: A Native Southwestern Treasure

If you’re looking to add authentic southwestern character to your garden, Metcalf’s groundsel might just be the native gem you’ve been searching for. This perennial forb brings a touch of wild beauty that’s perfectly adapted to the arid landscapes of the American Southwest.

What Makes Metcalf’s Groundsel Special?

Scientifically known as Packera neomexicana var. metcalfei, Metcalf’s groundsel is a true native of the lower 48 states, specifically calling Arizona and New Mexico home. As a member of the sunflower family, this plant has evolved alongside the region’s unique climate and wildlife for thousands of years.

You might also encounter this plant listed under its former names in older gardening references: Senecio metcalfei or Senecio neomexicanus var. metcalfei. Don’t let the name changes confuse you – it’s all the same wonderful plant!

Where Does It Grow?

This southwestern native has a relatively limited range, naturally occurring in Arizona and New Mexico. Its restricted distribution makes it a special addition to gardens within its native region, where it thrives in conditions that might challenge non-native plants.

Growth Habits Worth Knowing

As a perennial forb, Metcalf’s groundsel comes back year after year without developing woody stems like shrubs or trees. Instead, it maintains a herbaceous growth pattern, with its growing points located at or below ground level – a smart adaptation for surviving harsh southwestern conditions.

This growth strategy means the plant can weather difficult seasons by retreating to its underground parts, then emerge again when conditions improve. It’s nature’s way of playing it safe in an unpredictable climate!

Should You Plant It?

There are several compelling reasons to consider adding Metcalf’s groundsel to your landscape:

  • Native authenticity: Supporting local ecosystems by choosing plants that belong
  • Climate adaptation: Already perfectly suited to southwestern growing conditions
  • Low maintenance potential: Native plants typically require less intervention once established
  • Ecological connections: Provides habitat and resources for local wildlife

A Word About Rarity

Before you start planning your planting, there’s something important to consider. Metcalf’s groundsel has a somewhat uncertain conservation status, which means we’re not entirely sure how common or rare it might be in the wild. This uncertainty suggests it’s worth treating with extra care.

If you decide to grow this plant, make sure you source it responsibly. Look for reputable native plant nurseries that propagate their stock rather than wild-collecting. This approach ensures you’re not contributing to any potential decline of wild populations while still enjoying this beautiful native in your garden.

Best Gardening Practices

While specific growing information for this particular variety is limited, its native range gives us important clues about its preferences. Plants from Arizona and New Mexico typically appreciate:

  • Well-draining soils (soggy conditions are usually a no-go)
  • Tolerance for temperature extremes
  • Adaptation to lower rainfall patterns
  • Ability to handle intense sunlight

When planning your garden space, consider placing Metcalf’s groundsel in areas that mimic its natural habitat – perhaps in a xeriscape design, native plant garden, or naturalized landscape where it can blend with other southwestern natives.

The Bottom Line

Metcalf’s groundsel represents the kind of plant that makes native gardening so rewarding – it’s authentically local, environmentally appropriate, and connects your garden to the broader landscape. While we may not know every detail about growing this particular variety, its native status and perennial nature suggest it could be a valuable addition to the right southwestern garden.

Just remember to source it responsibly and give it the well-draining, sun-loving conditions that southwestern natives typically prefer. With a little care and the right location, you might find yourself with a thriving piece of authentic regional flora that brings both beauty and ecological value to your landscape.

Metcalf’s Groundsel

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

Packera Á. Löve & D. Löve - ragwort

Species

Packera neomexicana (A. Gray) W.A. Weber & Á. Löve - New Mexico groundsel

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