North America Non-native Plant

Flax Dodder

Botanical name: Cuscuta epilinum

USDA symbol: CUEP2

Life cycle: perennial

Habit: vine

Native status: Non-native, reproduces and persists in the wild in Canada âš˜ Non-native, reproduces and persists in the wild in the lower 48 states  

Flax Dodder: A Parasitic Plant You Don’t Want in Your Garden If you’ve ever wondered about those strange, spaghetti-like orange threads you might spot tangled around plants in fields or disturbed areas, you’ve likely encountered flax dodder (Cuscuta epilinum). While this peculiar plant has an undeniably unique appearance, it’s definitely ...

Flax Dodder: A Parasitic Plant You Don’t Want in Your Garden

If you’ve ever wondered about those strange, spaghetti-like orange threads you might spot tangled around plants in fields or disturbed areas, you’ve likely encountered flax dodder (Cuscuta epilinum). While this peculiar plant has an undeniably unique appearance, it’s definitely not something you’d want to invite into your garden party.

What Exactly Is Flax Dodder?

Flax dodder is a parasitic herbaceous plant that belongs to the morning glory family. Unlike your typical garden plants that politely photosynthesize their own food, this botanical freeloader has a very different lifestyle. It produces thin, thread-like, yellowish-orange stems that twist and coil around host plants like botanical spaghetti, literally sucking the life out of them.

This perennial forb lacks the chlorophyll needed for normal photosynthesis and instead survives entirely by attaching itself to other plants and stealing their nutrients. Talk about being a bad neighbor!

Where Does Flax Dodder Come From?

Originally from Europe and western Asia, flax dodder is a non-native species that has established itself across parts of North America. You can find it growing wild in several Canadian provinces including Manitoba, Ontario, and Quebec, as well as in numerous U.S. states including Delaware, Maryland, Massachusetts, Michigan, New Jersey, New York, Ohio, Pennsylvania, Vermont, and Washington.

Why You Shouldn’t Plant Flax Dodder

Here’s the thing about flax dodder – it’s basically the plant kingdom’s equivalent of that houseguest who overstays their welcome and eats all your food. This parasitic plant can seriously damage or even kill its host plants, making it a nightmare for farmers and gardeners alike.

Key reasons to avoid flax dodder:

  • It parasitizes and weakens host plants, potentially killing them
  • It can spread rapidly once established
  • It’s particularly problematic for crops like flax, alfalfa, and clover
  • It offers minimal ecological benefits to native wildlife
  • It’s non-native and can disrupt local ecosystems

What Does Flax Dodder Look Like?

Flax dodder is pretty unmistakable once you know what to look for. The plant produces masses of thin, wire-like stems that are typically yellow, orange, or reddish in color. These stems twine around host plants in dense, tangled masses that can look like someone dumped cooked spaghetti all over your garden.

During summer, the plant produces small clusters of tiny white or pinkish flowers, but don’t let these delicate blooms fool you – this plant is still trouble!

Better Native Alternatives

Instead of dealing with the headaches that come with parasitic plants, why not choose some beautiful native vines that actually contribute positively to your garden ecosystem? Consider these fantastic alternatives:

  • Wild ginger (Asarum canadense) – a lovely groundcover with heart-shaped leaves
  • Virginia creeper (Parthenocissus quinquefolia) – excellent for wildlife and gorgeous fall color
  • American groundnut (Apios americana) – produces edible tubers and attracts pollinators
  • Wild grape (Vitis riparia) – provides food for wildlife and can be trained as an ornamental vine

If You Encounter Flax Dodder

If you discover flax dodder in your area, the best approach is removal before it can spread further. Cut the parasitic stems away from host plants and dispose of them in the trash (not compost) to prevent further spread. Since this plant reproduces from seed, it’s important to remove it before those tiny flowers turn into seed heads.

Remember, the best defense against problematic non-native plants is a thriving ecosystem of native species that can naturally resist invasion. By choosing native plants for your garden, you’re not just creating a beautiful space – you’re helping to support local wildlife and maintain healthy, balanced ecosystems.

So while flax dodder might win points for uniqueness, it definitely loses when it comes to being a good garden citizen. Stick with native alternatives that will give you all the beauty without the botanical drama!

Flax Dodder

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

Solanales

Family

Cuscutaceae Dumort. - Dodder family

Genus

Cuscuta L. - dodder

Species

Cuscuta epilinum Weihe - flax dodder

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