Chilean eupatorium (Eupatorium chilense)

Photo: Forest & Kim StarrCC BY 3.0via Wikimedia Commonsresized / cropped

Chilean eupatorium Plant Care

Eupatorium chilense Molina

Updated · Sources · How we source care data

Flaveria trinervia is a species of flowering plant in the family Asteraceae known by the common names clustered yellowtops, speedyweed, and yellow twinstem. It is native to parts of the Americas, including the southeastern and southwestern United States (Florida, Texas, Arizona, New Mexico), most of the Bahamas, Mexico, Belize, and parts of the Caribbean, especially Cuba, Cayman Islands, Jamaica, Hispaniola, Puerto Rico and Barbados. It is also known in many other places as an introduced species and often a noxious weed, such as in Hawaii.

🌱Herbs🌼Perennials🌻Annuals
Water

Every 7–10 days

Light

Full sun to partial shade

Temp

60–80°F

Humidity

40–70%

At a glance

How do you care for Chilean eupatorium?

Water Chilean eupatorium every 7–10 days, letting the top layer of soil dry out between waterings, and give it full sun to partial shade. It prefers temperatures of 60–80°F (16–27°C) and 40–70% humidity. Fertilize it every 4 months during the growing season.

Where Is the Chilean eupatorium Native To?

Native range45 countries

What Is the Chilean eupatorium?

Chilean eupatorium (Eupatorium chilense) belongs to the Asteraceae family within the Eupatorium genus. Chilean eupatorium is native to parts of the Americas, including the southeastern and southwestern United States, most of the Bahamas, Mexico, Belize, and parts of the Caribbean, especially Cuba, Cayman Islands, Jamaica, Hispaniola, Puerto Rico and Barbados. Chilean eupatorium is also known as Eupatorium chilense.

Chilean eupatorium displays an upright, bushy perennial growth habit, reaching up to 3 ft tall with a spread of approximately 2 ft. Chilean eupatorium produces clusters of small, fluffy white or pink flowers.

Leaf size: approximately 6 inches.

How Often Should You Water a Chilean eupatorium?

Eupatorium chilense requires watering every 7–10 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.

Watering Frequency

Every 7–10 days

Let soil partially dry between waterings

What Light Does the Chilean eupatorium Need?

Chilean eupatorium thrives in full sun to partial shade.

Light Requirement

Full sun to partial shade

What Temperature and Humidity Does the Chilean eupatorium Prefer?

Eupatorium chilense grows best at temperatures of 60–80°F. Chilean eupatorium prefers humidity levels of 40–70%.

Temperature

60–80°F

Humidity

40–70%

What Soil Mix Works Best for a Chilean eupatorium?

Moist, well-draining soil rich in organic matter. Good drainage is essential for Chilean eupatorium to prevent waterlogging, which leads to root rot and fungal issues.

How Often Should You Fertilize a Chilean eupatorium?

Feed Chilean eupatorium every 4 months during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.

Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.

Fertilizing

Every 4 months

During the growing season

The PlantoScan app can remind you when to water and when to fertilize each plant.

How Do You Repot a Chilean eupatorium?

Repot every 2-3 years in early spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.

How Do You Propagate a Chilean eupatorium?

Chilean eupatorium can be propagated through seeds, division of rootball. Similar propagation techniques also apply to boneset plant care, which shares the same genus.

Is the Chilean eupatorium Toxic to Pets and Children?

Pet safety not verified

The ASPCA does not list Chilean eupatorium, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.

This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.

See all plants toxic to cats and plants toxic to dogs.

What Pests and Diseases Affect the Chilean eupatorium?

Chilean eupatorium is susceptible to aphids, spider mites, powdery mildew. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.

Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.

What USDA Hardiness Zone Does the Chilean eupatorium Need?

Chilean eupatorium grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. Chilean eupatorium is native to parts of the Americas, including the southeastern and southwestern United States, most of the Bahamas, Mexico, Belize, and parts of the Caribbean, especially Cuba, Cayman Islands, Jamaica, Hispaniola, Puerto Rico and Barbados. In cooler regions, grow Chilean eupatorium as a houseplant or bring it indoors before the first frost.

Hardiness Zone

Zone 13a

Keep exploring plants

Chilean eupatorium is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.

It belongs to the Eupatorium genus — compare its care with other Eupatorium species on PlantoScan.

Eupatorium is part of the Asteraceae plant family — browse all Asteraceae genera and species.

Chilean eupatorium thrives in bright light and direct sun — see other bright-light plants.

Related Plant Care Guides

Closely related plants with similar care requirements:

Sources

  • Scientific name & taxonomy: Eupatorium chilense Molina, family Asteraceae (first published in Sag. Stor. Nat. Chili 142, 354 (1782)) — World Flora Online record, IPNI name record.
  • Pet toxicity: Pet safety not verified: the ASPCA does not list Chilean eupatorium, so we can't confirm whether it is safe for cats and dogs. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
  • Photo: Forest & Kim Starr, CC BY 3.0, Wikimedia Commons — original.
  • Hardiness zone: USDA Zone 13a, calculated from the plant's minimum temperature.
  • Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.

Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.

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