North America Non-native Plant

Orobanche Multicaulis Var. Palmeri

Botanical name: Orobanche multicaulis var. palmeri

USDA symbol: ORMUP4

Native status: Not native but doesn't reproduce and persist in the wild

Orobanche multicaulis var. palmeri: The Mysterious Parasitic Plant You Can’t (and Shouldn’t) Grow If you’ve stumbled across the name Orobanche multicaulis var. palmeri in your plant research, you might be wondering if this could be an interesting addition to your native garden. Well, here’s the thing – this particular plant ...

Orobanche multicaulis var. palmeri: The Mysterious Parasitic Plant You Can’t (and Shouldn’t) Grow

If you’ve stumbled across the name Orobanche multicaulis var. palmeri in your plant research, you might be wondering if this could be an interesting addition to your native garden. Well, here’s the thing – this particular plant falls into the fascinating but frustrating category of species that simply can’t be cultivated in traditional gardens.

What Exactly Is This Plant?

Orobanche multicaulis var. palmeri belongs to the broomrape family, a group of parasitic plants that have evolved to live entirely off other plants. Unlike the green plants we’re used to growing, this species lacks chlorophyll and can’t make its own food through photosynthesis. Instead, it attaches to the roots of host plants and essentially becomes a plant vampire, drawing all its nutrients from its unwilling host.

Why You Won’t Find It at Your Local Nursery

There are several practical reasons why this plant isn’t available for home gardeners:

  • It requires specific host plants to survive
  • The complex relationship between parasite and host is nearly impossible to replicate in cultivation
  • It offers no ornamental value for traditional landscaping
  • Its parasitic nature could potentially harm other plants in your garden

Where It Naturally Occurs

While specific distribution information for this variety is limited, plants in the Orobanche genus are typically found in arid and semi-arid regions of western North America. The palmeri designation suggests this variety may have been named after botanist Edward Palmer, who extensively collected plants in the southwestern United States and Mexico in the late 1800s.

The Role of Parasitic Plants in Nature

Before you write off this plant entirely, it’s worth understanding that parasitic plants like Orobanche multicaulis var. palmeri do serve purposes in their natural ecosystems. They can help control dominant plant species and add to biodiversity in subtle ways. However, these benefits occur in natural settings where complex ecological relationships have developed over thousands of years.

Better Alternatives for Your Native Garden

If you’re interested in supporting native ecosystems in your area, consider these approaches instead:

  • Research truly native plants for your specific region
  • Focus on species that provide clear benefits to pollinators and wildlife
  • Choose plants with known cultivation requirements and availability
  • Consult with local native plant societies for region-specific recommendations

The Bottom Line

While Orobanche multicaulis var. palmeri is an interesting example of nature’s diversity, it’s not a plant for home cultivation. Its parasitic lifestyle makes it unsuitable for traditional gardening, and its ecological role is best left to wild spaces where it can function as part of complex natural systems.

If you’re passionate about native plants, channel that enthusiasm toward species that you can actually grow successfully and that will provide real benefits to your local ecosystem. Your garden – and your sanity – will thank you for it!

Orobanche Multicaulis Var. Palmeri

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

Scrophulariales

Family

Orobanchaceae Vent. - Broom-rape family

Genus

Orobanche L. - broomrape

Species

Orobanche multicaulis Brandegee - spiked broomrape

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