Pardon our appearance while we build a complete North American native plant finder that makes learning about and sourcing native plants easy. Get email updates.

North America Non-native Plant

Whitespot Giant Arum

Whitespot Giant Arum: A Dramatic Tropical Statement Plant If you’re looking to add some serious tropical drama to your garden, the whitespot giant arum (Amorphophallus paeoniifolius) might just be the showstopper you’ve been searching for. This striking plant, also known by its synonym Amorphophallus campanulatus, brings an exotic flair that’s ...

Whitespot Giant Arum: A Dramatic Tropical Statement Plant

If you’re looking to add some serious tropical drama to your garden, the whitespot giant arum (Amorphophallus paeoniifolius) might just be the showstopper you’ve been searching for. This striking plant, also known by its synonym Amorphophallus campanulatus, brings an exotic flair that’s hard to ignore—though it’s definitely not for every gardener or every climate.

Where Does This Giant Come From?

The whitespot giant arum calls Southeast Asia home, thriving naturally in the tropical regions of Indonesia, Malaysia, and surrounding areas. This plant has evolved to flourish in the warm, humid conditions of tropical forests, which gives us some pretty clear hints about what it needs to succeed in cultivation.

What Makes It So Special?

This isn’t your average houseplant. The whitespot giant arum produces massive, umbrella-like leaves that can create an instant tropical atmosphere wherever you place it. But here’s where things get really interesting—occasionally, this plant will surprise you with one of nature’s most unusual flowering displays: a towering spadix that can smell like rotting meat. Yes, you read that right! While it might not smell like roses, this unique flowering strategy attracts specific pollinators like flies and beetles in its native habitat.

Is It Right for Your Garden?

Before you get too excited, let’s talk reality check. This tropical beauty is only hardy in USDA zones 10-12, which means most gardeners will need to treat it as a houseplant or container specimen that comes indoors for winter. Here’s what you need to consider:

  • You love dramatic, conversation-starting plants
  • You can provide warm, humid conditions year-round
  • You have space for a large specimen plant
  • You don’t mind the occasional funky smell during flowering
  • You’re comfortable with a plant that goes dormant periodically

Growing Your Whitespot Giant Arum

If you’re ready to take the plunge, here’s how to keep your whitespot giant arum happy:

Location: Choose a spot with partial to full shade—direct sunlight will scorch those magnificent leaves. Indoors, a bright room away from direct sun works perfectly.

Soil: Well-draining but moisture-retentive soil is key. Think rich, organic soil that doesn’t get waterlogged but never completely dries out during the growing season.

Watering: Keep soil consistently moist while the plant is actively growing, but allow it to go dormant naturally by reducing water when leaves begin to die back.

Humidity: High humidity is non-negotiable. If you’re growing indoors, consider using a humidifier or placing the pot on a pebble tray filled with water.

Temperature: Warm conditions year-round, ideally 70-85°F (21-29°C).

Planting and Care Tips

  • Plant tubers in spring when temperatures consistently stay warm
  • Be patient—this plant has natural dormancy periods where it completely dies back
  • Don’t panic if your plant disappears underground for months; it’s just resting
  • Feed regularly during the growing season with a balanced fertilizer
  • Repot every few years or when the tuber outgrows its container

A Word About Native Alternatives

While the whitespot giant arum certainly makes a statement, it’s worth considering native alternatives that can provide similar dramatic foliage effects while supporting local ecosystems. Depending on your region, plants like wild ginger species, native arums, or large-leafed native perennials might give you that tropical look while benefiting local wildlife.

The Bottom Line

The whitespot giant arum is definitely a plant for the adventurous gardener who loves unique, tropical specimens. It’s not invasive, but it’s also not contributing to local ecosystems outside its native range. If you have the right conditions and enjoy caring for dramatic, somewhat finicky plants, this could be a rewarding addition to your collection. Just remember—it’s a commitment to providing tropical conditions and patience during its dormant periods.

Whether you choose to grow this exotic beauty or opt for native alternatives, the most important thing is creating a garden that brings you joy while being mindful of your local environment.

Whitespot Giant Arum

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Arecidae

Order

Arales

Family

Araceae Juss. - Arum family

Genus

Amorphophallus Blume ex Decne. - amorphophallus

Species

Amorphophallus paeoniifolius (Dennst.) Nicolson - whitespot giant arum

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