North America Non-native Plant

Clavel De Muerto

Botanical name: Tithonia rotundifolia

USDA symbol: TIRO

Life cycle: annual

Habit: forb

Native status: Non-native, reproduces and persists in the wild in the lower 48 states âš˜ Non-native, reproduces and persists in the wild in Puerto Rico âš˜ Non-native, reproduces and persists in the wild in the U.S. Virgin Islands  

Synonyms: Tagetes rotundifolia Mill. (TARO2)  âš˜  Tithonia speciosa (Hook.) Griseb. (TISP2)   

Clavel de Muerto: A Bold Non-Native Beauty for Your Garden If you’re looking for a plant that makes a serious statement in your garden, let me introduce you to clavel de muerto (Tithonia rotundifolia). This eye-catching flowering plant brings vibrant orange-red blooms and impressive height to any landscape, though it ...

Clavel de Muerto: A Bold Non-Native Beauty for Your Garden

If you’re looking for a plant that makes a serious statement in your garden, let me introduce you to clavel de muerto (Tithonia rotundifolia). This eye-catching flowering plant brings vibrant orange-red blooms and impressive height to any landscape, though it comes with a few considerations for the environmentally conscious gardener.

What is Clavel de Muerto?

Clavel de muerto, scientifically known as Tithonia rotundifolia, is a striking herbaceous plant that can function as either an annual or perennial depending on your climate. You might also see it listed under its botanical synonyms Tagetes rotundifolia Mill. or Tithonia speciosa (Hook.) Griseb. in older gardening references.

This robust forb—that’s gardening speak for a non-woody flowering plant—originally hails from Central America and Mexico but has made itself quite at home in several U.S. locations.

Where Does It Grow?

Currently, you’ll find clavel de muerto growing wild in Florida, Louisiana, Puerto Rico, and the U.S. Virgin Islands. As a non-native species, it has successfully established itself in these warmer regions where it reproduces on its own without human assistance.

Why Gardeners Love (and Should Consider) This Plant

There’s a lot to appreciate about clavel de muerto, especially if you’re drawn to bold, dramatic plants:

  • Show-stopping blooms: Bright orange-red daisy-like flowers that can’t be ignored
  • Impressive size: Can reach 6 feet or taller, making it perfect for back-of-border plantings
  • Pollinator magnet: Butterflies, bees, and hummingbirds absolutely love the nectar-rich flowers
  • Easy care: Once established, it’s quite drought tolerant and low-maintenance
  • Long blooming season: Flowers continuously from summer through fall

Garden Design and Landscape Role

Clavel de muerto works beautifully as a background plant in informal borders, cottage gardens, and wildflower meadows. Its towering height and bold color make it an excellent choice for:

  • Butterfly and pollinator gardens
  • Informal landscape designs
  • Cut flower gardens
  • Areas where you want to create dramatic vertical interest

Growing Conditions and Care

The good news is that clavel de muerto isn’t particularly fussy about its growing conditions:

Sunlight: Thrives in full sun locations

Soil: Prefers well-drained soil but adapts to various soil types

Water: Drought tolerant once established, though regular watering encourages more blooms

USDA Zones: Hardy as a perennial in zones 9-11; grows as an annual in cooler climates

Planting and Care Tips

Starting clavel de muerto is refreshingly straightforward:

  • Easily grown from seed—direct sow in spring after frost danger passes
  • Seeds germinate quickly in warm soil
  • Space plants 2-3 feet apart to accommodate their spreading habit
  • Deadhead spent flowers to encourage continued blooming
  • Be prepared for self-seeding—this plant likes to spread its offspring around
  • In colder zones, treat as an annual or start seeds indoors 6-8 weeks before last frost

A Word About Responsible Gardening

While clavel de muerto isn’t currently listed as invasive or noxious, it’s worth noting that this non-native plant has established wild populations in several states. As responsible gardeners, we should always consider native alternatives that provide similar benefits to our local ecosystems.

Some fantastic native alternatives that offer comparable pollinator benefits and dramatic garden presence include:

  • Wild bergamot (Monarda fistulosa) for butterfly attraction
  • Joe Pye weed (Eutrochium species) for height and pollinator appeal
  • Native sunflowers (Helianthus species) for bold blooms

The Bottom Line

Clavel de muerto certainly brings drama and pollinator appeal to any garden where it grows. If you choose to grow it, you’ll enjoy its easy-care nature and spectacular blooms. Just remember to garden thoughtfully by deadheading spent flowers to prevent excessive self-seeding, and consider incorporating native alternatives alongside it to support your local ecosystem.

Whether you’re creating a dedicated pollinator garden or simply want to add some tropical flair to your landscape, clavel de muerto delivers on its promise of bold, beautiful blooms with minimal fuss.

Clavel De Muerto

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

Asterales

Family

Asteraceae Bercht. & J. Presl - Aster family

Genus

Tithonia Desf. ex Juss. - tithonia

Species

Tithonia rotundifolia (Mill.) S.F. Blake - clavel de muerto

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