North America Non-native Plant

Spiral Ginger

Botanical name: Costus scaber

USDA symbol: COSC14

Life cycle: perennial

Habit: forb

Native status: Non-native, reproduces and persists in the wild in Puerto Rico âš˜ Non-native, reproduces and persists in the wild in the U.S. Virgin Islands  

Spiral Ginger: A Tropical Beauty for Warm Climate Gardens If you’re looking to add some serious tropical flair to your garden, spiral ginger might just catch your eye. This eye-catching perennial brings a touch of the exotic with its distinctive spiraling stems and vibrant orange-red flower displays. But before you ...

Spiral Ginger: A Tropical Beauty for Warm Climate Gardens

If you’re looking to add some serious tropical flair to your garden, spiral ginger might just catch your eye. This eye-catching perennial brings a touch of the exotic with its distinctive spiraling stems and vibrant orange-red flower displays. But before you fall head-over-heels for this tropical charmer, let’s dive into what makes it tick and whether it’s the right fit for your garden.

What is Spiral Ginger?

Spiral ginger (Costus scaber) is a fascinating perennial that’s technically classified as a forb – basically a non-woody plant that comes back year after year. Don’t let the ginger name fool you though; while it’s related to true gingers, it’s got its own unique personality. The most striking feature? Those leaves that spiral up the stem like a natural staircase, creating an almost architectural look that’s hard to ignore.

The real showstopper comes when it blooms. Picture cone-shaped flower heads in brilliant orange-red, with delicate white or cream flowers peeking out from colorful bracts. It’s like nature’s own tropical flower arrangement!

Native Status and Where You’ll Find It

Here’s where things get a bit complicated. Spiral ginger originally hails from the tropical regions of Central and South America – think Brazil, Venezuela, and their neighbors. However, in the United States, you’ll find it growing in Puerto Rico and the U.S. Virgin Islands, where it’s actually considered a non-native species that has made itself quite at home, reproducing and persisting in the wild without any human help.

Should You Grow Spiral Ginger?

The honest answer? It depends on where you are and what you’re after. If you’re in zones 9b through 11 and want a striking tropical accent plant, spiral ginger can be a gorgeous addition to your garden. It’s particularly fantastic for:

  • Creating tropical-themed garden spaces
  • Adding architectural interest with its spiral leaf arrangement
  • Providing color and texture in shaded areas
  • Attracting hummingbirds and butterflies to your garden

However, since it’s non-native to U.S. territories where it currently grows, you might want to consider native alternatives first. Native plants are always the best choice for supporting local ecosystems and wildlife. If you do choose to grow spiral ginger, just be mindful of its spreading tendencies.

Growing Conditions: What Spiral Ginger Craves

Think tropical paradise and you’ll be on the right track. Spiral ginger is pretty particular about its living conditions:

  • Light: Partial shade to filtered light – direct sun is a no-go
  • Soil: Rich, well-draining soil loaded with organic matter
  • Moisture: Consistently moist (but not soggy) soil
  • Humidity: High humidity is a must
  • Temperature: Warm temperatures year-round

If you’re outside of zones 9b-11, don’t despair! Spiral ginger makes an excellent houseplant or greenhouse specimen, and you can even grow it as an annual in cooler climates.

Planting and Care Tips

Getting spiral ginger established is fairly straightforward if you can meet its tropical needs:

  • Plant in a spot protected from harsh winds and direct sunlight
  • Amend your soil with plenty of compost or organic matter
  • Keep the soil consistently moist but ensure good drainage to prevent root rot
  • Provide extra humidity in dry conditions – a humidifier works wonders indoors
  • Propagate by dividing the rhizomes (underground stems) in spring

Wildlife and Pollinator Benefits

One of the delightful perks of growing spiral ginger is watching the wildlife it attracts. Those showy flowers are magnets for hummingbirds, and you might also spot some butterfly visitors. It’s like having your own mini tropical ecosystem right in your backyard!

The Bottom Line

Spiral ginger is undeniably stunning and can be a fantastic addition to the right garden. Just remember that with great tropical beauty comes great responsibility – make sure you can provide the warm, humid, shaded conditions it needs to thrive. And if you’re concerned about growing non-native species, consider exploring native alternatives that might give you a similar tropical vibe while supporting your local ecosystem.

Whether you’re creating a tropical oasis or just want something unique for your shaded garden spots, spiral ginger certainly knows how to make a statement. Just be prepared to become the neighbor everyone asks about when that spiral stem starts showing off its gorgeous blooms!

Spiral Ginger

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Zingiberidae

Order

Zingiberales

Family

Costaceae Nakai - Costus family

Genus

Costus L. - costus

Species

Costus scaber Ruiz & Pav. - spiral ginger

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