3 named cultivars

perennial

Kahili Ginger

The Story

Plant Bio

Hedychium gardnerianum, Kahili ginger, is a clumping rhizomatous perennial from the Himalaya and Southeast Asia, sending up arching leafy pseudostems five to eight feet high. Long strappy bright green leaves clasp the stems, and dense upright spikes of fragrant pale yellow flowers with long red stamens open through late summer and autumn.

This is one of the most damaging invasive plants in the world, listed among the hundred worst: in Hawaii, the Azores and New Zealand it forms impenetrable rhizome mats that smother native forest floor and stop tree regeneration. Do not plant it in Hawaii or any frost-free region — grow it in a container, or in a climate where winter kills the top growth.

Uses & Benefits:

Tall spikes of scented pale yellow flowers with long red stamens, at the end of the season.

Fast, bold subtropical foliage in a single season, and manageable when grown in a container.

Butterflies, moths and hummingbirds visit the flowers, but it is severely invasive where winters are mild.

Essentials

At a Glance

Plant Type

Perennial

Height

60 inches

Width

24 inches

Light

Full Sun, Partial Sun

Zones

8, 9, 10

Water

High

Humidity

High

Lifespan

Perennial

Native To

Himalaya and Southeast Asia

Toxicity

Non-toxic; roots edible but not palatable

Planting

How to Grow

Check whether it is listed as a noxious weed locally.
Grow it in a container in frost-free regions.
Plant in dappled sun or partial shade in rich soil.
Water generously through the growing season.
Feed monthly for the biggest flower spikes.
Cut the stems down after frost blackens them.

Pro Tip

Deadhead the spikes before the orange seed capsules split — birds spread that seed, and it is how the plant escapes gardens.

Keep It Thriving

Care Guide

Do

Grow it contained rather than in open ground 🪴
Cut spent spikes before seed sets ✂️
Water and feed generously in growth 💧
Check local noxious weed listings first ⚠️

Don't

Plant it in Hawaii or any frost-free region ❌
Let the seed capsules ripen and split ❌
Dump rhizomes or prunings in the wild ❌

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Deadhead
Feed

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Large container for a subtropical effectLate-season scent near a terraceCold-climate borders where frost contains it

Companion Plants

CannaElephant Ear Banana FatsiaHardy Begonia

Multiply

Propagation Methods

Good to Know

Common Questions

Kahili Ginger questions

What zones can Kahili Ginger grow in?

Kahili Ginger is hardy in USDA Zones 8–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Kahili Ginger deer resistant?

Not reliably. Deer may browse Kahili Ginger, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does Kahili Ginger bloom?

Kahili Ginger typically blooms in late summer to fall through early fall. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Kahili Ginger need full sun?

Kahili Ginger does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.