North America Native Plant

Spiny Chloracantha

Botanical name: Chloracantha spinosa

USDA symbol: CHSP11

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Synonyms: Aster spinosus Benth. (ASSP3)  âš˜  Chloracantha spinosa (Benth.) G.L. Nesom var. spinosa (CHSPS2)  âš˜  Erigeron ortegae S.F. Blake (EROR6)  âš˜  Leucosyris spinosa (Benth.) Greene (LESP3)   

Spiny Chloracantha: A Tough Native Wildflower for Water-Wise Gardens Meet spiny chloracantha (Chloracantha spinosa), a scrappy little native wildflower that’s tougher than it looks. Don’t let the spiny name scare you off – this perennial herb is actually a gardener’s secret weapon for creating beautiful, low-maintenance landscapes that support local ...

Spiny Chloracantha: A Tough Native Wildflower for Water-Wise Gardens

Meet spiny chloracantha (Chloracantha spinosa), a scrappy little native wildflower that’s tougher than it looks. Don’t let the spiny name scare you off – this perennial herb is actually a gardener’s secret weapon for creating beautiful, low-maintenance landscapes that support local wildlife while conserving water.

What is Spiny Chloracantha?

Spiny chloracantha is a native perennial forb that belongs to the sunflower family. As a forb, it’s an herbaceous plant without significant woody growth – think of it as nature’s version of a compact, flowering groundcover. This hardy little plant produces charming daisy-like flowers and has adapted beautifully to some of our continent’s most challenging growing conditions.

Where Does It Naturally Grow?

This resilient native calls the American Southwest and South-Central regions home, naturally occurring across eight states: Arizona, California, Louisiana, Nevada, New Mexico, Oklahoma, Texas, and Utah. It’s a true native success story, having evolved to thrive in these diverse landscapes over thousands of years.

Why Consider Spiny Chloracantha for Your Garden?

Here’s where this unassuming wildflower really shines:

  • Drought champion: Once established, it requires minimal irrigation – perfect for water-wise landscaping
  • Wildlife magnet: Provides food for large wildlife (comprising 5-10% of their diet) and attracts native pollinators
  • Low maintenance: Thrives in poor soils where other plants struggle
  • Authentic native beauty: Adds genuine regional character to natural landscapes
  • Versatile water tolerance: Adapts to both wetland edges and dry upland areas

Garden Design and Landscape Role

Spiny chloracantha works beautifully in xerophytic (dry) gardens, native plant landscapes, and naturalized areas. It’s particularly valuable for:

  • Prairie and meadow restorations
  • Wildlife habitat gardens
  • Slope stabilization projects
  • Low-water groundcover applications
  • Pollinator gardens with a natural aesthetic

Rather than trying to create formal flower beds, think of this plant as part of a natural tapestry – it looks most at home when allowed to mingle with other native grasses and wildflowers.

Growing Conditions and Care

The beauty of spiny chloracantha lies in its adaptability. This plant can handle a range of moisture conditions, from the edges of seasonal wetlands to bone-dry uplands, though it truly excels in well-drained situations.

Ideal conditions:

  • Sunlight: Full sun to partial sun
  • Soil: Well-draining soils, tolerates poor and rocky conditions
  • Water: Drought tolerant once established; occasional deep watering during extreme dry spells
  • USDA Zones: Hardy in zones 7-10

Planting and Establishment Tips

Getting spiny chloracantha established is refreshingly straightforward:

  • Best planting time: Fall planting allows roots to establish before summer heat
  • Soil prep: Avoid over-amending soil – this plant actually prefers lean conditions
  • Spacing: Allow room for natural spreading
  • Watering: Provide regular water the first season, then reduce significantly
  • Maintenance: Minimal pruning needed; allow natural growth patterns

Supporting Pollinators and Wildlife

One of the most compelling reasons to grow spiny chloracantha is its ecological value. The small flowers attract native bees, butterflies, and other beneficial insects, while the seeds and foliage provide sustenance for birds and larger wildlife. In areas where it grows naturally, it can make up a significant portion of wildlife diets – that’s some serious ecological bang for your buck!

Is Spiny Chloracantha Right for Your Garden?

This native wildflower is perfect if you’re looking to:

  • Reduce garden water usage without sacrificing beauty
  • Support local wildlife and pollinators
  • Create authentic regional landscapes
  • Establish low-maintenance plantings
  • Restore natural areas

However, it might not be the best choice if you prefer highly manicured, formal garden styles or need plants that provide significant structural presence in the landscape.

Spiny chloracantha proves that some of our most valuable garden plants are the quiet achievers – the ones that work hard behind the scenes, supporting wildlife, conserving resources, and adding authentic natural beauty to our landscapes. For gardeners ready to embrace the resilient beauty of native plants, this tough little wildflower deserves serious consideration.

Wildlife Status

Want to attract wildlife or keep hungry critters away from your garden? Understanding the relationship between plants and wildlife is key. While plant tags may indicate deer and rabbit resistance, they don't tell the full story. Every gardener has experienced the disappointment of purchasing "deer-resistant" plants only to find them nibbled to the ground!

The extent to which plants are resistant to animal browsing is a matter of degree. Likewise, the extent to which a plant attracts wanted visitors also varies. Whether you want a garden full or free of wildlife, learning about interactions between a plant and wild animals can help you make smarter choices for the garden you desire.

As shown below Shrubby Indian Mallow isn't a large food source for animals or birds. You can confidently add this plant to your garden and rest assured knowing it's unlikely to be devoured by four-legged visitors.

Small animals

not a food source

not a source of cover

Large animals

5-10% of diet

Infrequently used as cover

Terrestrial birds

not a food source

not a source of cover

Water birds

not a food source

not a source of cover

Sources:

Everitt, J.H., D.L. Drawe, and R.I. Lonard. 1999. Field guide to the broad leaved herbaceous plants of South Texas used by livestock and wildlife. Texas Tech University Press. Lubbock.

Spiny Chloracantha

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

Chloracantha G.L. Nesom - chloracantha

Species

Chloracantha spinosa (Benth.) G.L. Nesom - spiny chloracantha

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