North America Native Plant

Sherman Hoyt Woolstar

Botanical name: Eriastrum pluriflorum shermanhoytae

USDA symbol: ERPLS

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Sherman Hoyt Woolstar: A Rare California Native Worth Protecting Meet the Sherman Hoyt woolstar (Eriastrum pluriflorum shermanhoytae), a delicate annual wildflower that calls California home. While this charming native might not be the showiest plant in your garden, it represents something special – a piece of California’s unique botanical heritage ...

Rare plant alert!

Region: Conservation status by state

Status: S3?T3?: 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 ⚘ 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. ⚘

Sherman Hoyt Woolstar: A Rare California Native Worth Protecting

Meet the Sherman Hoyt woolstar (Eriastrum pluriflorum shermanhoytae), a delicate annual wildflower that calls California home. While this charming native might not be the showiest plant in your garden, it represents something special – a piece of California’s unique botanical heritage that deserves our attention and protection.

What Makes This Plant Special?

The Sherman Hoyt woolstar is an annual forb, which simply means it’s a soft-stemmed flowering plant that completes its entire life cycle in one growing season. Unlike woody shrubs or trees, this little beauty lacks significant woody tissue and puts all its energy into producing flowers and seeds before the season ends.

As a member of the Eriastrum genus, commonly known as woolstars, this plant belongs to a group known for their clusters of small, star-shaped flowers that often have a woolly or fuzzy appearance – hence the charming woolstar name.

Where You’ll Find It

This native treasure is endemic to California, meaning it naturally occurs nowhere else in the world. The Sherman Hoyt woolstar represents the incredible diversity of plant life that makes California such a botanical hotspot.

A Word of Caution: Rarity Matters

Here’s something important every gardener should know: the Sherman Hoyt woolstar has a Global Conservation Status of S3?T3?, which indicates there may be concerns about its population status. While the exact meaning of this rating is undefined in our records, it suggests this plant deserves special consideration.

If you’re interested in growing this species, please ensure you source it responsibly from reputable native plant nurseries that propagate their stock rather than collecting from wild populations. Never collect seeds or plants from natural habitats – this can harm already vulnerable populations.

Should You Grow Sherman Hoyt Woolstar?

Given its rarity status, growing this plant comes with responsibility. If you do choose to include it in your garden, you’ll be participating in conservation efforts by maintaining genetic diversity in cultivation. However, detailed growing information for this specific subspecies is quite limited in available resources.

As an annual, you can expect this plant to:

  • Complete its life cycle in one growing season
  • Likely produce small, star-shaped flowers typical of the woolstar family
  • Self-seed under the right conditions, potentially returning next year
  • Prefer conditions similar to other California native annuals

Growing Tips (Based on General Woolstar Care)

While specific care information for Sherman Hoyt woolstar is limited, most California native annuals in the woolstar family tend to prefer:

  • Well-draining soil (essential for most California natives)
  • Full sun to partial shade
  • Minimal summer water once established
  • Fall or early spring planting to align with natural rainfall patterns

The Bigger Picture

Sometimes the plants we can’t easily grow teach us the most about conservation and the irreplaceable value of natural habitats. The Sherman Hoyt woolstar reminds us that not every native plant needs to be in our gardens – some are best appreciated and protected in their natural settings.

If you’re passionate about supporting California native plants, consider growing more common and readily available woolstar species, or focus on other native annuals that can provide similar ecological benefits without the conservation concerns.

Remember, every native plant in our gardens is a small victory for local ecosystems, pollinators, and wildlife. Whether it’s a common species or a rare treasure like Sherman Hoyt woolstar, choosing natives is always a step in the right direction.

Sherman Hoyt Woolstar

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

Solanales

Family

Polemoniaceae Juss. - Phlox family

Genus

Eriastrum Wooton & Standl. - woollystar

Species

Eriastrum pluriflorum (A. Heller) H. Mason - Tehachapi woollystar

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