North America Native Plant

Lemmon’s Rubberweed

Botanical name: Hymenoxys lemmonii

USDA symbol: HYLE

Life cycle: biennial

Habit: forb

Native status: Native to the lower 48 states  

Lemmon’s Rubberweed: A Hidden Gem for Western Native Gardens If you’re looking to add a splash of sunshine to your drought-tolerant garden while supporting local ecosystems, Lemmon’s rubberweed (Hymenoxys lemmonii) might just be the perfect choice. This charming native wildflower brings bright yellow blooms and hardy resilience to landscapes across ...

Rare plant alert!

Region: Conservation status by state

Status: S3?: Status is uncertain but is somewhere between the following rankings: Inexact rank: ⚘ 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 ⚘

Lemmon’s Rubberweed: A Hidden Gem for Western Native Gardens

If you’re looking to add a splash of sunshine to your drought-tolerant garden while supporting local ecosystems, Lemmon’s rubberweed (Hymenoxys lemmonii) might just be the perfect choice. This charming native wildflower brings bright yellow blooms and hardy resilience to landscapes across the American Southwest, though it remains one of gardening’s best-kept secrets.

What Makes Lemmon’s Rubberweed Special?

Lemmon’s rubberweed is a delightful native forb—essentially a non-woody flowering plant that comes back year after year. As a biennial to perennial species, this little powerhouse establishes itself over time, creating lasting beauty in your garden. Unlike many high-maintenance ornamentals, this native thrives with minimal care once established, making it a gardener’s dream plant.

Where Does It Call Home?

This western beauty is native to five states across the southwestern United States: Arizona, California, Nevada, Oregon, and Utah. Its natural range reflects its adaptation to the unique climate and soil conditions of this region, making it perfectly suited for gardens in these areas.

Garden Appeal and Landscape Role

Lemmon’s rubberweed typically grows 6-18 inches tall and wide, forming compact clumps that work beautifully in several garden settings:

  • Rock gardens where its drought tolerance shines
  • Native plant borders alongside other southwestern species
  • Xeriscaping projects focused on water conservation
  • Pollinator gardens supporting local wildlife

The plant produces cheerful yellow, daisy-like flowers that brighten up any landscape while requiring minimal water inputs—a win-win for both aesthetics and sustainability.

Growing Conditions and Care

One of the best things about Lemmon’s rubberweed is how easy it is to grow, provided you give it what it naturally craves:

  • Sunlight: Full sun exposure
  • Soil: Well-draining soils; avoid heavy clay or constantly moist conditions
  • Water: Drought tolerant once established; minimal supplemental watering needed
  • USDA Hardiness Zones: Generally suitable for zones 4-9

Planting and Care Tips

Getting started with Lemmon’s rubberweed is straightforward:

  • Plant in spring after the last frost date
  • Space plants 12-18 inches apart to allow for natural spreading
  • Water regularly during the first growing season to help establish roots
  • Once established, reduce watering significantly—this plant prefers lean conditions
  • Deadhead spent flowers to encourage continued blooming

Supporting Pollinators and Wildlife

Native plants like Lemmon’s rubberweed are pollinator magnets. The bright yellow flowers attract bees, butterflies, and other beneficial insects that have co-evolved with native flora. By planting this species, you’re creating habitat and food sources that support local ecosystems—something non-native ornamentals simply can’t match.

A Word About Conservation

Here’s something important to know: Lemmon’s rubberweed has a conservation status that suggests it may be uncommon in parts of its range. This makes it even more valuable for native plant enthusiasts! However, this also means you should be thoughtful about sourcing. Always purchase from reputable native plant nurseries that propagate their own stock rather than wild-collecting. This ensures you’re supporting conservation efforts rather than potentially harming wild populations.

Is Lemmon’s Rubberweed Right for Your Garden?

Consider adding Lemmon’s rubberweed to your landscape if you:

  • Live within its native range (Arizona, California, Nevada, Oregon, or Utah)
  • Want a low-maintenance, drought-tolerant plant
  • Are creating habitat for native pollinators
  • Appreciate the beauty of native wildflowers
  • Have well-draining soil and plenty of sun

This charming native offers the perfect combination of beauty, ecological value, and easy care—making it an excellent choice for gardeners who want to make a positive impact while enjoying gorgeous blooms. Just remember to source responsibly and give it the sunny, well-drained conditions it loves!

Lemmon’s Rubberweed

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

Hymenoxys Cass. - rubberweed

Species

Hymenoxys lemmonii (Greene) Cockerell - Lemmon's rubberweed

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