North America Native Plant

Plummer’s Candyleaf

Botanical name: Stevia plummerae var. alba

USDA symbol: STPLA

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Plummer’s Candyleaf: A Rare Arizona Native Worth Protecting If you’re passionate about native gardening in Arizona, you might want to get acquainted with Plummer’s candyleaf (Stevia plummerae var. alba). This charming perennial forb represents one of those special native plants that deserves more attention – though with an important caveat ...

Rare plant alert!

Region: Conservation status by state

Status: S3S4T1T3Q: Status is uncertain but is somewhere between the following rankings: Uncertain taxonomy: ⚘ Subspecies or variety is critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘ 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 ⚘ 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. ⚘ 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 ⚘

Plummer’s Candyleaf: A Rare Arizona Native Worth Protecting

If you’re passionate about native gardening in Arizona, you might want to get acquainted with Plummer’s candyleaf (Stevia plummerae var. alba). This charming perennial forb represents one of those special native plants that deserves more attention – though with an important caveat about responsible gardening that we’ll discuss.

What Makes Plummer’s Candyleaf Special?

Plummer’s candyleaf is a native Arizona perennial that belongs to the sunflower family. As a forb, it’s an herbaceous plant without woody stems, meaning it dies back to the ground each year and returns from its roots. The alba in its name hints at its white flowers, distinguishing this variety from other forms of the species.

What makes this plant particularly noteworthy is its conservation status. With a Global Conservation Status of S3S4T1T3Q, Plummer’s candyleaf appears to have some level of rarity or conservation concern. This means it’s not just another pretty face in the garden – it’s a plant that plays an important role in Arizona’s native ecosystems.

Where Does It Grow?

This Arizona native is found exclusively in the Grand Canyon State, making it a true regional specialty. Its limited geographic distribution adds to both its charm and its conservation importance.

Should You Plant Plummer’s Candyleaf?

Here’s where things get interesting – and responsible. Given its apparent rarity status, Plummer’s candyleaf could be a wonderful addition to native Arizona gardens, but only if you source it responsibly. This means:

  • Purchase plants from reputable native plant nurseries
  • Never collect plants or seeds from wild populations
  • Ensure any plants you buy are nursery-propagated, not wild-collected
  • Consider it a conservation effort as much as a gardening choice

Garden Role and Design Potential

As a native forb, Plummer’s candyleaf would likely work well in:

  • Native plant gardens focused on Arizona flora
  • Xeriscape and drought-tolerant landscapes
  • Conservation gardens highlighting rare native species
  • Mixed perennial borders featuring southwestern natives

Its perennial nature means it’ll return year after year, making it a reliable component of your native landscape once established.

Growing Conditions and Care

While specific growing information for this variety is limited, as an Arizona native forb, Plummer’s candyleaf likely prefers:

  • Well-draining soils typical of Arizona’s diverse landscapes
  • Minimal supplemental watering once established
  • Full to partial sun exposure
  • Protection from extreme cold if grown at elevation

The key with any rare native is to mimic its natural growing conditions as closely as possible in your garden setting.

Wildlife and Ecological Benefits

While specific wildlife benefits aren’t well-documented for this variety, native Arizona forbs typically support local ecosystems by providing nectar for native pollinators, seeds for birds, and habitat for beneficial insects. By growing rare natives like Plummer’s candyleaf, you’re contributing to the preservation of Arizona’s unique plant communities.

The Bottom Line

Plummer’s candyleaf represents an opportunity to garden with purpose. If you can source it responsibly from a reputable native plant nursery, you’ll be adding a truly special Arizona native to your landscape while supporting conservation efforts. Just remember – with rare plants comes the responsibility to garden ethically and sustainably.

Before planting, do your homework on sourcing, and consider reaching out to local native plant societies or botanical gardens for guidance on responsible cultivation of rare Arizona natives.

Plummer’s Candyleaf

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

Stevia Cav. - candyleaf

Species

Stevia plummerae A. Gray - Plummer's candyleaf

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