North America Native Plant

Island Mistletoe

Botanical name: Phoradendron barahonae

USDA symbol: PHBA4

Life cycle: perennial

Habit: subshrub

Native status: Native to Puerto Rico  

Island Mistletoe: A Rare Caribbean Native with Unique Growing Requirements If you’ve ever wondered about the mysterious plants that seem to grow right out of tree branches, you might be curious about island mistletoe (Phoradendron barahonae). This fascinating native Puerto Rican plant is quite different from your typical garden shrub ...

Island Mistletoe: A Rare Caribbean Native with Unique Growing Requirements

If you’ve ever wondered about the mysterious plants that seem to grow right out of tree branches, you might be curious about island mistletoe (Phoradendron barahonae). This fascinating native Puerto Rican plant is quite different from your typical garden shrub – and for good reason!

What Makes Island Mistletoe Special

Island mistletoe is a perennial shrub that’s native exclusively to Puerto Rico, making it a true Caribbean endemic. Unlike most plants in your garden that root in soil, this unique species is what botanists call a parasitic plant – it actually grows on other trees and shrubs, drawing nutrients and water from its host plant.

As a shrub, island mistletoe typically grows as a multi-stemmed woody plant, usually staying under 13-16 feet in height. However, since it grows on other plants rather than from the ground, its appearance and size can vary significantly depending on its host.

Where You’ll Find Island Mistletoe

This rare native species is found only in Puerto Rico, where it has adapted to the island’s unique tropical climate and ecosystem.

Should You Try Growing Island Mistletoe?

Here’s where things get interesting – and a bit challenging. Island mistletoe isn’t something you can simply plant in your garden like a typical shrub. Because it’s a parasitic plant, it requires a host tree or shrub to survive. This makes it extremely difficult, if not impossible, for home gardeners to cultivate successfully.

The Reality of Mistletoe Gardening

If you’re hoping to add this native Puerto Rican species to your landscape, you should know:

  • It cannot be grown in traditional soil-based gardens
  • It requires specific host plants that it can attach to and parasitize
  • The establishment process is complex and often unsuccessful
  • Very little horticultural information exists for home cultivation

Better Alternatives for Puerto Rican Native Gardens

While island mistletoe might not be practical for most home landscapes, Puerto Rico offers many other beautiful native plants that are much more garden-friendly. Consider exploring other native Puerto Rican shrubs and trees that can thrive in traditional landscape settings while still supporting local wildlife and preserving the island’s natural heritage.

Conservation Considerations

If you do encounter island mistletoe in its natural habitat, it’s worth appreciating it for what it is – a unique part of Puerto Rico’s native ecosystem. These parasitic relationships, while unusual, play important roles in forest ecology and biodiversity.

Rather than attempting to cultivate this challenging species, consider supporting conservation efforts that protect the natural habitats where island mistletoe and its host plants naturally occur. This approach ensures these fascinating plant relationships continue to thrive in their native environment.

Island 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

Phoradendron Nutt. - mistletoe

Species

Phoradendron barahonae Urb. & Trel. - island mistletoe

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