North America Non-native Plant

Flamegold

Botanical name: Koelreuteria elegans

USDA symbol: KOEL

Life cycle: perennial

Habit: tree

Native status: Non-native, reproduces and persists in the wild in the lower 48 states  

Flamegold Tree: A Stunning But Non-Native Addition to Southern Gardens If you’ve ever spotted a tree covered in bright yellow flowers during late summer when most other trees are winding down for the season, you might have encountered the flamegold tree (Koelreuteria elegans). This eye-catching perennial tree certainly knows how ...

Flamegold Tree: A Stunning But Non-Native Addition to Southern Gardens

If you’ve ever spotted a tree covered in bright yellow flowers during late summer when most other trees are winding down for the season, you might have encountered the flamegold tree (Koelreuteria elegans). This eye-catching perennial tree certainly knows how to make an entrance, but before you rush to plant one, there are some important things every gardener should know about this non-native beauty.

What Exactly is a Flamegold Tree?

The flamegold is a medium-sized tree that typically grows 13-16 feet tall (though it can reach greater heights under ideal conditions). As a perennial woody plant with a single trunk, it falls squarely into the tree category, though environmental conditions can sometimes encourage a multi-stemmed growth pattern.

What makes this tree special? Well, it’s all about timing and color. When most trees are preparing for autumn, the flamegold bursts into bloom with clusters of small, bright yellow flowers that eventually give way to papery seed pods in shades of pink and red. It’s like nature’s grand finale before winter!

Where Does Flamegold Grow?

Here’s where things get a bit complicated. While the flamegold tree is native to Taiwan and southern China, it has made itself quite at home in parts of the southern United States. Currently, you’ll find established populations in Florida, Louisiana, Mississippi, and Texas, where it reproduces on its own without any human help.

This naturalization is both impressive and concerning – impressive because it shows the tree’s adaptability, but concerning because non-native plants that spread readily can sometimes outcompete our native species.

The Good, The Bad, and The Beautiful

Let’s be honest about what you’re getting with a flamegold tree:

The Beautiful: Those spectacular late-season flowers are genuine showstoppers, and the tree provides lovely filtered shade with its compound leaves. It’s also quite drought-tolerant once established, making it a practical choice for water-wise gardening.

The Practical: This tree thrives in USDA hardiness zones 8-11, loves full sun, and isn’t particularly fussy about soil as long as it drains well. The flowers do attract bees and other pollinators, which is always a plus.

The Concerning: As a non-native species that’s already naturalized in several states, planting flamegold means you’re potentially contributing to the spread of a non-indigenous plant. While it’s not currently listed as invasive everywhere, its ability to self-seed and establish in wild areas is worth considering.

Should You Plant Flamegold?

This is where responsible gardening comes into play. If you’re drawn to the flamegold’s late-season color show, consider these native alternatives first:

  • American beautyberry (Callicarpa americana) for similar late-season interest
  • Redbud (Cercis canadensis) for early spring color
  • Native sumacs for autumn drama

If you do decide to plant flamegold, be a responsible gardener: remove seed pods before they mature and spread, and consider it a contained ornamental rather than letting it naturalize.

Growing Flamegold Successfully

Should you choose to grow this tree, here’s how to keep it happy:

  • Plant in spring after the last frost
  • Choose a spot with full sun and well-draining soil
  • Water regularly the first year to establish roots
  • Once established, it’s quite drought tolerant
  • Minimal pruning needed – just remove dead or crossing branches
  • Remove seed pods to prevent unwanted spreading

The Bottom Line

The flamegold tree is undeniably beautiful and relatively easy to grow in the right climate. However, as gardeners who care about our local ecosystems, it’s worth asking ourselves whether we can achieve similar aesthetic goals with native plants that support local wildlife and don’t risk disrupting established plant communities.

If you do choose to plant flamegold, do so thoughtfully and responsibly. Your garden can be stunning while still being kind to the environment – sometimes it just takes a little extra consideration in our plant choices.

Flamegold

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Sapindales

Family

Sapindaceae Juss. - Soapberry family

Genus

Koelreuteria Laxm. - koelreuteria

Species

Koelreuteria elegans (Seem.) A.C. Sm. - flamegold

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