North America Native Plant

Bolander’s Yampah

Botanical name: Perideridia bolanderi involucrata

USDA symbol: PEBOI

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Bolander’s Yampah: A Hidden Gem for California Native Gardens If you’re looking to add authentic California character to your native garden, let me introduce you to a delightful little wildflower that deserves more attention: Bolander’s yampah (Perideridia bolanderi involucrata). This charming perennial forb might not be the showiest plant in ...

Rare plant alert!

Region: Conservation status by state

Status: S5T3T4: Status is uncertain but is somewhere between the following rankings: 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. ⚘ Subspecies or varieties is apparently secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the region or more than 10,000 individuals ⚘ Secure: At very low or no risk of extinction in the jurisdiction due to a very extensive range, abundant populations or occurrences, with little to no concern from declines or threats. ⚘

Bolander’s Yampah: A Hidden Gem for California Native Gardens

If you’re looking to add authentic California character to your native garden, let me introduce you to a delightful little wildflower that deserves more attention: Bolander’s yampah (Perideridia bolanderi involucrata). This charming perennial forb might not be the showiest plant in the garden center, but it brings something special to naturalistic landscapes and wildflower plantings.

What Makes Bolander’s Yampah Special?

Bolander’s yampah is a true California native, found exclusively within the Golden State’s diverse ecosystems. As a member of the carrot family, it produces clusters of tiny white flowers arranged in delicate umbels that dance above its herbaceous foliage. These understated blooms may be small, but they pack a punch when it comes to supporting local wildlife.

This perennial forb grows as a non-woody plant, meaning it dies back to the ground each year and returns from its roots when conditions are right. It’s the kind of plant that adds authentic wildness to your garden without overwhelming more prominent features.

Where Does It Call Home?

Bolander’s yampah is endemic to California, making it a perfect choice for gardeners who want to support truly local ecosystems. You’ll find this species scattered across various habitats throughout the state, from coastal regions to inland areas.

Why Your Garden (and Local Wildlife) Will Love It

Here’s where Bolander’s yampah really shines:

  • Pollinator magnet: Those small white umbel flowers are like tiny landing pads for beneficial insects, including native bees, beneficial wasps, and other pollinators
  • Low maintenance: Once established, this native requires minimal care and can handle California’s dry summers
  • Authentic habitat: It helps recreate the natural plant communities that California’s wildlife depends on
  • Naturalistic appeal: Perfect for wildflower meadows, prairie-style gardens, and informal native plantings

A Word About Responsible Gardening

Before we dive into growing tips, there’s something important to mention: Bolander’s yampah has a conservation status that suggests it may be uncommon in some areas. If you decide to add this beauty to your garden, please source it responsibly from reputable native plant nurseries rather than collecting from wild populations. This ensures we can all enjoy this species for generations to come.

Growing Bolander’s Yampah Successfully

The good news is that this California native is relatively easy to grow once you understand its preferences:

Ideal Growing Conditions

  • Climate zones: Best suited for USDA zones 8-10, matching California’s Mediterranean climate
  • Soil: Prefers well-draining soils; avoid areas that stay soggy
  • Water: Appreciates some moisture during the growing season but becomes drought-tolerant once established
  • Sun exposure: Thrives in full sun to partial shade

Planting and Care Tips

Getting started with Bolander’s yampah is straightforward:

  • Timing: Plant in fall or early spring when temperatures are moderate
  • Spacing: Give plants room to naturalize – they look best in informal drifts
  • Watering: Provide regular water the first season, then reduce to occasional deep watering
  • Maintenance: Minimal pruning needed; allow plants to go dormant naturally

Perfect Garden Partners

Bolander’s yampah plays well with other California natives. Consider pairing it with native grasses, lupines, poppies, and other wildflowers for a naturalistic meadow effect. It’s particularly stunning in prairie-style gardens where its delicate texture contrasts beautifully with broader-leaved companions.

The Bottom Line

While Bolander’s yampah might not be the flashiest plant you’ll ever grow, it offers something invaluable: authentic California character and genuine ecological value. For gardeners who appreciate subtle beauty and want to support local ecosystems, this native forb is definitely worth seeking out. Just remember to source it responsibly, and you’ll have a charming addition to your native garden that both you and local wildlife will treasure.

Ready to add some authentic California wildness to your landscape? Bolander’s yampah might just be the perfect choice for creating those naturalistic garden moments that make native gardening so rewarding.

Bolander’s Yampah

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

Apiales

Family

Apiaceae Lindl. - Carrot family

Genus

Perideridia Rchb. - yampah

Species

Perideridia bolanderi (A. Gray) A. Nelson & J.F. Macbr. - Bolander's yampah

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