North America Native Plant

Degener’s Korthal Mistletoe

Botanical name: Korthalsella degeneri

USDA symbol: KODE

Life cycle: perennial

Habit: subshrub

Native status: Native to Hawaii  

Degener’s Korthal Mistletoe: A Rare Hawaiian Treasure Not for Your Garden Meet Degener’s korthal mistletoe (Korthalsella degeneri), one of Hawaii’s most elusive native plants. Before you start dreaming about adding this unique species to your garden, there’s something important you need to know: this isn’t your typical garden-variety plant, and ...

Rare plant alert!

Region: United States

Status: S1Q: Status is uncertain but is somewhere between the following rankings: Uncertain taxonomy: ⚘ Critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘ Endangered: In danger of extinction throughout all or a significant portion of its range. ⚘

Region: United States

Degener’s Korthal Mistletoe: A Rare Hawaiian Treasure Not for Your Garden

Meet Degener’s korthal mistletoe (Korthalsella degeneri), one of Hawaii’s most elusive native plants. Before you start dreaming about adding this unique species to your garden, there’s something important you need to know: this isn’t your typical garden-variety plant, and it definitely shouldn’t be on your shopping list.

What Makes This Plant Special

Degener’s korthal mistletoe is a perennial shrub that’s native exclusively to Hawaii. As a mistletoe species, it’s what we call a parasitic plant – meaning it depends on other trees and shrubs for survival, drawing nutrients and water from its host plants rather than growing independently in soil like most garden plants.

This woody perennial typically grows as a multi-stemmed shrub, usually staying under 13-16 feet in height, though it can vary depending on its host and environmental conditions.

A Plant in Crisis

Here’s the crucial part: Korthalsella degeneri is listed as Endangered in the United States, with a Global Conservation Status that reflects its precarious position in the wild. This means the species is at serious risk of extinction, making it completely inappropriate for garden cultivation.

When we encounter rare and endangered plants like this, our role as gardeners shifts from how can I grow this? to how can I help protect this species in its natural habitat?

Where You’ll Find It (But Please Don’t Disturb It)

This rare mistletoe is found only in Hawaii, where it clings to life in its native ecosystems. Its distribution is extremely limited, which contributes to its endangered status.

Why You Shouldn’t Try to Grow It

Even if you could somehow get your hands on this plant (which you shouldn’t), here are several reasons why Degener’s korthal mistletoe isn’t suitable for home cultivation:

  • Endangered status: Removing or cultivating endangered plants can harm wild populations
  • Parasitic nature: It needs specific host plants to survive – you can’t just plant it in a pot
  • Unknown cultivation requirements: There’s limited information about how to successfully grow this species
  • Conservation priority: Efforts should focus on protecting existing wild populations

Supporting Conservation Instead

Rather than trying to grow this rare beauty, consider these ways to support Hawaiian native plant conservation:

  • Support organizations working to protect Hawaiian ecosystems
  • Choose other Hawaiian native plants that are not endangered for your garden
  • Learn about habitat restoration efforts in Hawaii
  • Spread awareness about the importance of protecting rare species

The Bottom Line

Degener’s korthal mistletoe serves as a reminder that not every fascinating plant belongs in our gardens. Sometimes, the best way to appreciate a species is to protect it in its natural habitat and choose sustainable alternatives for our landscapes. If you’re interested in Hawaiian native plants, look for species that are more common and suitable for cultivation – there are plenty of beautiful options that won’t put endangered species at risk.

Remember: the rarest plants often need our protection more than our cultivation. Let’s keep Degener’s korthal mistletoe thriving where it belongs – in the wild ecosystems of Hawaii.

Degener’s Korthal Mistletoe

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

Santalales

Family

Viscaceae Batsch - Christmas Mistletoe family

Genus

Korthalsella v. Tiegh. - korthal mistletoe

Species

Korthalsella degeneri Danser - Degener's korthal mistletoe

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