Native Plants

California Broomrape

Orobanche californica californica

USDA symbol: ORCAC2

annual forb

Canada: native
Lower 48 states: native

If you’ve ever stumbled across a peculiar purple or yellowish spike poking up from the ground in the Pacific Northwest, you might have encountered California broomrape (Orobanche californica californica). This native plant is definitely one of nature’s more unusual characters – and before you get any ideas about adding it ...

California Broomrape: A Fascinating But Uncultivatable Native Parasite

If you’ve ever stumbled across a peculiar purple or yellowish spike poking up from the ground in the Pacific Northwest, you might have encountered California broomrape (Orobanche californica californica). This native plant is definitely one of nature’s more unusual characters – and before you get any ideas about adding it to your garden, let me tell you why that’s not going to work out!

What Makes California Broomrape Special

California broomrape is what botanists call a parasitic plant, which means it’s basically the plant world’s equivalent of that friend who always forgets their wallet. Unlike typical garden plants that make their own food through photosynthesis, this crafty annual forb has given up on the whole green leaf thing entirely. Instead, it latches onto the roots of other plants and steals their nutrients.

The plant produces distinctive flower spikes that can range from purple to yellowish in color, emerging from what looks like a scaly, somewhat alien stem. Don’t expect any pretty green foliage – California broomrape has abandoned chlorophyll in favor of its parasitic lifestyle.

Where You’ll Find This Native Character

California broomrape is native to the Pacific Coast region, calling British Columbia, Washington, Oregon, and California home. It’s a true native to both Canada and the lower 48 states, making it a legitimate part of our regional ecosystem.

  • Species observed
  • No observations

Why You Can’t (And Shouldn’t Try to) Grow It

Here’s the thing about California broomrape that makes it completely unsuitable for garden cultivation: it literally cannot survive without stealing from other plants. This parasitic relationship is incredibly specific and complex, requiring particular host plants that the broomrape can successfully attach to and parasitize.

Even if you could somehow manage to establish the right conditions (which would involve having the correct host plants and somehow introducing the broomrape seeds at just the right time), you’d essentially be introducing a plant thief into your garden that would weaken or potentially kill your other plants.

Its Role in Natural Ecosystems

Before you start thinking of California broomrape as a botanical villain, remember that it plays a natural role in wild ecosystems. In nature, parasitic plants like this one can help maintain plant community balance and may provide some nectar resources for pollinators, though research on its specific wildlife benefits is limited.

How to Identify California Broomrape

If you’re exploring natural areas in the Pacific Northwest, here’s how to spot this unusual native:

  • Look for purple to yellowish flower spikes emerging from the ground
  • No green leaves or typical plant foliage
  • Scaly, somewhat fleshy stem
  • Usually found near shrubs or other plants it’s parasitizing
  • Annual growth pattern, appearing seasonally

Better Alternatives for Your Native Garden

If you’re interested in supporting native Pacific Coast plants in your garden, there are countless beautiful and garden-friendly options that won’t parasitize your other plants. Consider native wildflowers, shrubs, and perennials that are well-suited to cultivation and provide excellent habitat and food sources for local wildlife.

California broomrape is definitely a fascinating example of nature’s diversity and ingenuity, but it’s best appreciated in its natural habitat rather than in our home landscapes. Sometimes the most interesting native plants are the ones we admire from a respectful distance!

Orobanche californica californica 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. Orobanche californica californica is also known as:

Myzorrhiza californica | USDA symbol: MYCA5
Orobanche grayana Beck var. nelsonii | USDA symbol: ORGRN
Orobanche grayana Beck var. violacea | USDA symbol: ORGRV

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: Scrophulariales
Family: Orobanchaceae Vent. - Broom-rape family
Genus: Orobanche L. - broomrape

Species: Orobanche californica Cham. & Schltdl. - California broomrape

Subspecies: Orobanche californica Cham. & Schltdl. ssp. californica - California broomrape

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