Weeds Identification Gallery

American or True Mistletoes

  • Phoradendron spp.
  • Mistletoe Family: Viscaceae
Updated: 12/2025

American mistletoes are shrubby-stemmed, evergreen perennial broadleaf plants that grow as parasites on woody plants, extracting moisture and nutrients from their host. Plants often develop a roundish form up to 2 feet (60 cm) or more in diameter. All American mistletoe species are native to California. They are found throughout California, except for the North Coast, to roughly 8500 feet (2600 m). Mistletoes are unique in appearance and it is unlikely that they would be confused with other plant species.

Bare tree with clusters of green mistletoe under a clear blue sky, roadside. Surroundings include low buildings and bare branches. Copyright information is at the bottom (UC Statewide IPM Project Copyright 2000 Regents, University of California). Credit: Jack Kelly Clark, UC IPM
Mistletoes growing on a deciduous tree. Credit: Jack Kelly Clark, UC IPM
Swollen limb or gall caused by mistletoe infesting ash trunk, UC Davis Credit: Jack Kelly Clark, UC IPM
Mistletoe causing limb swelling. Credit: Jack Kelly Clark, UC IPM
Mistletoe on walnut, Davis Credit: Jack Kelly Clark, UC IPM
Mistletoe in branch. Credit: Jack Kelly Clark, UC IPM

Seedling

The cotyledons (seed leaves) are fused.

Mature Plant

Leaves are thick, nearly oval, green, yellowish-green, gray-green, and sometimes reddish. Leaves are opposite to one another along the stem.

Mistletoe on branch, Davis Credit: Jack Kelly Clark, UC IPM
Close-up of mistletoe. Credit: Jack Kelly Clark, UC IPM

Flowers

Flowers bloom from April through December, but are inconspicuous.

Fruits

Berries are shiny and gelatinous and usually contain one seed surrounded by adhesive tissue.

Mistletoe foliage and fruit, Davis Credit: Jack Kelly Clark, UC IPM
Leaves and fruit. Credit: Jack Kelly Clark, UC IPM

Seeds

Mistletoe seeds are dispersed via bird droppings, birds' feet and beaks, or by equipment used to trim trees. Only seeds deposited at an ideal point of entry will survive, because following germination, a growing rootlike structure must come in contact with a tree's bud, leaf base, or twig in order to penetrate for nutrients and water.

Reproduction

Reproduces by seed.

More Information