Native Plants

Rydberg’s Goldenbush

Ericameria obovata

USDA symbol: EROB3

perennial subshrub

Lower 48 states: native

If you’re passionate about growing truly unique native plants, Rydberg’s goldenbush (Ericameria obovata) might just catch your attention. This lesser-known perennial shrub represents one of nature’s more specialized creations—a plant that’s carved out its own particular niche in the American West. Rydberg’s goldenbush is a native perennial shrub that belongs ...

Rydberg’s Goldenbush may be listed as rare in your area.
Global Conservation Status

Status: S3S4 | Apparently Secure: Uncommon but not rare, and usually widespread. Possible cause for longterm concern. Typically more than 100 occurrences in the state or more than 10,000 individuals.

Rydberg’s Goldenbush: A Rare Native Shrub Worth Knowing

If you’re passionate about growing truly unique native plants, Rydberg’s goldenbush (Ericameria obovata) might just catch your attention. This lesser-known perennial shrub represents one of nature’s more specialized creations—a plant that’s carved out its own particular niche in the American West.

What Makes Rydberg’s Goldenbush Special?

Rydberg’s goldenbush is a native perennial shrub that belongs to the sunflower family. Like other shrubs, it’s a multi-stemmed woody plant that typically stays under 13-16 feet in height, though it usually grows much smaller. This hardy little plant has earned its place in the native plant world through sheer persistence and adaptation to specific conditions.

Where Does It Call Home?

This goldenbush is a true Utah native, found exclusively within the state’s borders. Its limited geographic range makes it a special find for native plant enthusiasts who want to support local biodiversity. The plant has quite a taxonomic history, having been known by several scientific names including Haplopappus rydbergii and Macronema obovatum—a testament to botanists’ ongoing efforts to properly classify our native flora.

  • Species observed
  • No observations

Why Consider Growing Rydberg’s Goldenbush?

Here’s where things get interesting—and important. This plant carries a conservation status of S3S4, which indicates it may face some challenges in its natural habitat. For gardeners, this presents both an opportunity and a responsibility:

  • You’ll be supporting a rare native species by providing it garden space
  • You’re contributing to biodiversity conservation in your own backyard
  • You’ll have a truly unique plant that few other gardeners can claim
  • You’re connecting your landscape to Utah’s natural heritage

Important Considerations Before Planting

Source Responsibly: Given its rarity status, it’s crucial to obtain Rydberg’s goldenbush only from reputable native plant nurseries or seed suppliers who practice ethical collection methods. Never collect from wild populations, as this could further stress already limited natural stands.

Limited Information Available: Here’s the honest truth—detailed growing information for this specific species is quite limited in horticultural literature. This reflects both its rarity and its specialized nature. Most gardening resources focus on more common Ericameria species.

Growing Rydberg’s Goldenbush: What We Know

While specific cultural requirements for Ericameria obovata aren’t well-documented, we can draw some educated conclusions based on its native habitat and family characteristics:

  • As a Utah native, it likely prefers well-draining soils
  • It probably tolerates drought conditions once established
  • Full sun is most likely preferred
  • It should be cold-hardy in Utah’s climate zones

Getting Expert Advice

If you’re serious about growing Rydberg’s goldenbush, your best bet is to connect with:

  • Utah native plant societies
  • Local botanical gardens specializing in native plants
  • University extension offices
  • Native plant nurseries in Utah

These experts can provide region-specific growing advice and help ensure you’re supporting conservation efforts rather than inadvertently harming them.

The Bottom Line

Rydberg’s goldenbush represents something special in the native plant world—a rare species that deserves our attention and protection. While it might not be the easiest plant to grow or find, for dedicated native plant gardeners, it offers the chance to participate in conservation while creating a truly unique landscape.

Just remember: with great rarity comes great responsibility. If you choose to grow this plant, make sure you’re doing so ethically and sustainably. Your garden could become a small but important refuge for this uncommon Utah native.

Ericameria obovata is also known as...

Often we refer to plants by their common names. When shopping for plants the scientific name is the best way to positively identify the plant species you desire. But some plants have more than one name! While it doesn't happen often, nurseries might display one name while you're searching for another. Ericameria obovata is also known as:

Haplopappus rydbergii | USDA symbol: HARY
Haplopappus watsonii Gray var. rydbergii | USDA symbol: HAWAR
Macronema obovatum , non Haplopappus obovatus | USDA symbol: MAOB4

Why do some plants have more than one name? Over time plant species may be renamed for a few reasons:

  1. Botanists in different regions named the same plant without knowing it had already been classified.
  2. A species was reclassified after scientific advances in, for example, DNA analysis.
  3. Slight variations within a species are sometimes mistakenly identified as entirely new species.

Classification

Group: Dicot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida - Dicotyledons
Subclass: Asteridae
Order: Asterales
Family: Asteraceae Bercht. & J. Presl - Aster family
Genus: Ericameria Nutt. - goldenbush

Species: Ericameria obovata (Rydb.) G.L. Nesom - Rydberg's goldenbush

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