North America Non-native Plant

Ragleaf

Botanical name: Crassocephalum

USDA symbol: CRASS2

Life cycle: annual

Habit: forb

Native status: Non-native, reproduces and persists in the wild in Hawaii âš˜ Non-native, reproduces and persists in the wild in the lower 48 states âš˜ Non-native, reproduces and persists in the wild in Pacific Basin excluding Hawaii âš˜ Non-native, reproduces and persists in the wild in Puerto Rico  

Ragleaf: What You Need to Know About This Tropical Annual If you’ve spotted small, orange daisy-like flowers popping up in disturbed areas of your garden, you might have encountered ragleaf (Crassocephalum). This annual forb has made itself quite at home in warm climates across the United States, though it’s not ...

Ragleaf: What You Need to Know About This Tropical Annual

If you’ve spotted small, orange daisy-like flowers popping up in disturbed areas of your garden, you might have encountered ragleaf (Crassocephalum). This annual forb has made itself quite at home in warm climates across the United States, though it’s not originally from around here.

What Exactly Is Ragleaf?

Ragleaf is an herbaceous annual plant – meaning it completes its entire life cycle in one growing season and doesn’t develop woody stems. As a forb, it’s essentially a flowering plant that stays relatively soft and green throughout its life. The plant gets its common name from its somewhat raggedly-shaped leaves, though honestly, it’s not going to win any beauty contests in your flower bed.

Where Does Ragleaf Come From and Where Can You Find It?

Originally hailing from tropical Africa, ragleaf has traveled far from home. It’s now established as a non-native species that reproduces on its own in several U.S. locations, including Florida, Hawaii, Puerto Rico, Palau, and various U.S. Minor Outlying Islands. The plant has shown it can persist and spread without human help in these warm, tropical and subtropical environments.

Should You Plant Ragleaf in Your Garden?

Here’s where things get a bit complicated. While ragleaf isn’t necessarily harmful, it’s also not the most exciting addition to your garden. Since it’s non-native, it doesn’t provide the same ecological benefits that indigenous plants offer to local wildlife and ecosystems.

If you’re drawn to the small, bright orange flowers, consider these native alternatives instead:

  • Native sunflowers for similar daisy-like blooms
  • Local asters for fall color
  • Regional wildflower mixes that support native pollinators

Growing Conditions and Care

If ragleaf has already appeared in your garden (and it might, since it’s quite good at showing up uninvited), here’s what it prefers:

  • Climate: USDA hardiness zones 9-11
  • Sunlight: Full sun to partial shade
  • Soil: Not picky at all – thrives in poor, disturbed soils
  • Water: Moderate moisture, but quite drought-tolerant once established
  • Maintenance: Minimal – this is one tough little plant

The Pollinator Question

Ragleaf’s small flowers can attract some pollinators, particularly flies and smaller bees. However, native plants will always be the better choice for supporting local pollinator populations, as they’ve evolved together over thousands of years.

Managing Ragleaf in Your Landscape

Since ragleaf is an annual that readily self-seeds, you can control its spread by removing plants before they go to seed. If you don’t mind its presence and it’s not crowding out more desirable plants, it can add a bit of wild character to informal garden areas.

The bottom line? While ragleaf isn’t a garden villain, it’s not exactly a garden hero either. If you’re planning a new garden or looking to add color and pollinator value, you’ll get much more bang for your buck with native species that truly belong in your local ecosystem.

Ragleaf

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

Crassocephalum Moench - ragleaf

Species

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