North America Native Plant

Field Mousetail

Botanical name: Ivesia campestris

USDA symbol: IVCA2

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Field Mousetail: A Delicate California Native Worth Protecting If you’re looking for a charming, understated native plant that adds subtle elegance to your garden while supporting local ecosystems, field mousetail (Ivesia campestris) might just be the perfect choice. This delicate California native brings a touch of mountain meadow magic to ...

Rare plant alert!

Region: Conservation status by state

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

Field Mousetail: A Delicate California Native Worth Protecting

If you’re looking for a charming, understated native plant that adds subtle elegance to your garden while supporting local ecosystems, field mousetail (Ivesia campestris) might just be the perfect choice. This delicate California native brings a touch of mountain meadow magic to home landscapes, though it comes with some important considerations every responsible gardener should know.

What Makes Field Mousetail Special

Field mousetail is a perennial forb – essentially a non-woody flowering plant that comes back year after year. Don’t let the modest name fool you; this little beauty produces clusters of tiny white to cream-colored flowers that create a soft, cloud-like appearance in the garden. The flowers sit atop delicate, feathery foliage with an attractive silvery-green hue that catches the light beautifully.

As a native California species, field mousetail has evolved alongside local wildlife and naturally fits into the state’s ecosystems. It’s particularly well-adapted to the Sierra Nevada mountains and adjacent foothills, where it thrives in the challenging conditions that would stress many garden plants.

Where Field Mousetail Grows

This charming native is found exclusively in California, making it a true Golden State endemic. Its natural habitat includes the Sierra Nevada mountains and surrounding foothills, where it has adapted to rocky, well-drained soils and variable mountain weather.

A Word of Caution: Conservation Matters

Here’s something every potential grower needs to know: field mousetail has a Global Conservation Status of S3, meaning it’s considered vulnerable. With typically only 21 to 100 occurrences and between 3,000 to 10,000 individuals in the wild, this plant faces real conservation challenges.

If you choose to grow field mousetail, please only source it from reputable nurseries that propagate plants responsibly rather than collecting from wild populations. Better yet, consider supporting conservation efforts while enjoying this beauty in your garden.

Growing Field Mousetail Successfully

The good news? Once you’ve sourced field mousetail responsibly, it’s relatively straightforward to grow if you can meet its basic needs.

Ideal Growing Conditions

  • Sunlight: Full sun to partial shade
  • Soil: Well-drained, sandy or rocky soils (avoid rich, fertile garden soil)
  • Water: Drought tolerant once established; minimal supplemental watering needed
  • USDA Zones: Hardy in zones 6-9

Perfect Garden Settings

Field mousetail shines in:

  • Rock gardens where its delicate texture contrasts beautifully with stones
  • Alpine or mountain-themed landscapes
  • Native plant gardens focused on California species
  • Drought-tolerant landscapes where water conservation is a priority
  • Naturalistic plantings that mimic wild meadow conditions

Planting and Care Tips

The secret to success with field mousetail is remembering it’s a mountain plant that despises soggy feet:

  • Plant in spring or fall when temperatures are moderate
  • Ensure excellent drainage – this is non-negotiable
  • Avoid fertilizers and rich soils that can actually harm the plant
  • Water regularly the first season, then reduce to minimal irrigation
  • Mulch lightly with gravel or small stones rather than organic mulch

Supporting Pollinators

While field mousetail may look delicate, it’s a hardworking member of the pollinator support team. Its small, nectar-rich flowers attract various native bees, flies, and other tiny pollinators that are often overlooked but play crucial roles in healthy ecosystems.

Should You Grow Field Mousetail?

Field mousetail is an excellent choice for gardeners who:

  • Want to support native plant conservation
  • Have well-drained, rocky, or sandy soil conditions
  • Appreciate subtle, naturalistic beauty over flashy blooms
  • Are committed to sourcing plants responsibly
  • Live in appropriate climate zones (6-9)

However, it might not be the best fit if you have heavy clay soil, prefer low-maintenance plants that tolerate neglect in rich garden soil, or are looking for bold, showy flowers.

The Bottom Line

Field mousetail offers gardeners a chance to grow a truly special California native while contributing to conservation efforts. Its delicate beauty and ecological value make it worth the extra effort to source responsibly and provide appropriate growing conditions. By choosing this vulnerable native, you’re not just adding beauty to your garden – you’re helping ensure future generations can enjoy this charming plant too.

Field Mousetail

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Rosales

Family

Rosaceae Juss. - Rose family

Genus

Ivesia Torr. & A. Gray - mousetail

Species

Ivesia campestris (M.E. Jones) Rydb. - field mousetail

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