North America Non-native Plant

Winged False Buttonweed

Botanical name: Spermacoce alata

USDA symbol: SPAL3

Habit: forb

Native status: Not native but doesn't reproduce and persist in the wild

Synonyms: Borreria alata (Aubl.) DC. (BOAL4)   

Winged False Buttonweed: A Plant to Avoid in Your Garden If you’ve stumbled across the name winged false buttonweed while researching plants for your garden, we need to have a heart-to-heart chat. While this herbaceous plant might sound intriguing, Spermacoce alata is actually one of those plants that falls squarely ...

Noxious plant alert!

Winged False Buttonweed: A Plant to Avoid in Your Garden

If you’ve stumbled across the name winged false buttonweed while researching plants for your garden, we need to have a heart-to-heart chat. While this herbaceous plant might sound intriguing, Spermacoce alata is actually one of those plants that falls squarely into the thanks, but no thanks category for home gardeners.

What Is Winged False Buttonweed?

Winged false buttonweed is a forb – essentially a soft-stemmed, non-woody herbaceous plant that lacks the thick, woody growth you’d see in shrubs or trees. You might also encounter this plant listed under its botanical synonym, Borreria alata, in older gardening resources or scientific literature.

This plant produces small flowers and has adapted to thrive in various conditions, which might sound like a gardener’s dream. However, that adaptability is precisely what makes it problematic.

Why You Should Skip This Plant

Here’s the crucial information every gardener needs to know: winged false buttonweed is classified as a noxious weed in the United States. This official designation isn’t handed out lightly – it means this plant poses a genuine threat to local ecosystems, agriculture, or native plant communities.

When a plant earns the noxious label, it typically means:

  • It spreads aggressively and outcompetes native plants
  • It can be difficult or expensive to control once established
  • It may cause economic or environmental harm
  • It has limited natural predators in non-native environments

Geographic Concerns

While the exact native range and current distribution of winged false buttonweed requires further clarification, its noxious status in the United States suggests it has already proven problematic in various regions.

Better Alternatives for Your Garden

Instead of risking the introduction of a noxious species, consider these approaches:

  • Choose native alternatives that provide similar aesthetic appeal without the ecological risks
  • Consult with your local native plant society or extension office for region-specific recommendations
  • Focus on plants that support local pollinators and wildlife
  • Select species that are well-adapted to your local climate and soil conditions

What to Do If You Encounter It

If you suspect you have winged false buttonweed growing on your property, don’t panic, but do take action:

  • Contact your local extension office or department of agriculture for identification confirmation
  • Follow their guidance for safe and effective removal
  • Never compost or dispose of plant material where it might spread
  • Consider professional help for large infestations

The Bottom Line

While every plant has its place in the world’s ecosystems, winged false buttonweed simply isn’t suited for intentional cultivation in home gardens. Its noxious status serves as an important warning that this species can cause more harm than good when introduced to new environments.

The best approach? Skip this one entirely and invest your gardening energy in plants that will beautify your space while supporting local ecosystems. Your garden – and your local environment – will thank you for making the responsible choice.

Winged False Buttonweed

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

Rubiales

Family

Rubiaceae Juss. - Madder family

Genus

Spermacoce L. - false buttonweed

Species

Spermacoce alata Aubl. [excluded] - winged false buttonweed

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