North America Native Plant

Cobbler’s Tack

Botanical name: Glossogyne tenuifolia

USDA symbol: GLBI3

Life cycle: perennial

Habit: forb

Native status: Native to Pacific Basin excluding Hawaii  

Synonyms: Glossogyne tenuifolia (Labill.) Cass. ex Less. (GLTE6)  âš˜  Neuractis bidens (Retz.) Veldkamp ex Mesfin (NEBI4)   

Cobbler’s Tack: A Little-Known Pacific Island Native If you’ve never heard of cobbler’s tack (Glossogyne tenuifolia), you’re not alone! This perennial forb is one of those fascinating native plants that remains largely under the gardening radar, primarily because it calls some pretty remote places home. Where Does Cobbler’s Tack Come ...

Cobbler’s Tack: A Little-Known Pacific Island Native

If you’ve never heard of cobbler’s tack (Glossogyne tenuifolia), you’re not alone! This perennial forb is one of those fascinating native plants that remains largely under the gardening radar, primarily because it calls some pretty remote places home.

Where Does Cobbler’s Tack Come From?

Cobbler’s tack is native to the Pacific Basin, specifically documented in Guam and Palau. This makes it a true island native, adapted to the unique growing conditions found in these tropical Pacific locations.

What Kind of Plant Is It?

Botanically speaking, cobbler’s tack is classified as a forb – essentially a herbaceous perennial that doesn’t develop woody stems like shrubs or trees. Think of it as a flowering plant that dies back to its roots each year and regrows from the base, though in tropical climates this cycle might be less pronounced.

Should You Try Growing Cobbler’s Tack?

Here’s where things get tricky. While cobbler’s tack is a legitimate native species with an intriguing common name, there’s remarkably little information available about cultivating this plant. This lack of cultivation knowledge presents several challenges:

  • Unknown growing requirements and care needs
  • Unclear hardiness zones and climate tolerance
  • Limited availability from nurseries or seed suppliers
  • Unknown garden performance and aesthetic qualities

The Reality for Most Gardeners

Unless you’re gardening in Guam or Palau (or similar tropical Pacific climates), cobbler’s tack probably isn’t a practical choice for your landscape. Even in appropriate climates, the lack of cultivation information makes it a challenging plant to grow successfully.

Better Native Alternatives

If you’re interested in native plants for your garden, consider focusing on well-documented native species from your specific region. These alternatives will offer:

  • Proven garden performance
  • Available growing guides and care instructions
  • Accessibility through local native plant nurseries
  • Known benefits to local wildlife and pollinators

The Bigger Picture

Plants like cobbler’s tack remind us that there’s still so much we don’t know about our world’s flora. While it may not be suitable for most home gardens, species like this play important roles in their native ecosystems. Supporting conservation efforts and native plant research helps ensure these unique plants continue to thrive in their natural habitats.

Sometimes the best way to appreciate a native plant is simply to know it exists and to support the preservation of the wild spaces where it naturally grows.

Cobbler’s Tack

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

Glossocardia Cass.

Species

Glossocardia bidens (Retz.) Veldkamp - cobbler's tack

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