Scorpionbush: A Tropical Ornamental with a Fierce Name
Don’t let the intimidating name fool you – scorpionbush (Carmona) is actually a pretty charming little shrub that’s found its way into many Hawaiian gardens. While it might sound like something from a desert survival story, this perennial shrub is more about delicate flowers and colorful berries than anything remotely scary.
What Exactly Is Scorpionbush?
Scorpionbush is a multi-stemmed woody shrub that typically stays under 13-16 feet tall, though it usually grows much smaller in garden settings. As a perennial, it keeps its foliage year-round and develops several stems from near the ground, creating a bushy, dense appearance that many gardeners find appealing.
Where Does It Come From?
Here’s where things get interesting from a native gardening perspective: scorpionbush isn’t actually native to Hawaii (or anywhere in the United States, for that matter). Originally from Southeast Asia and other tropical regions, this plant has been introduced to Hawaii where it now reproduces on its own in the wild. Currently, you’ll find it established throughout the Hawaiian islands.
Why Consider (or Not Consider) Growing Scorpionbush?
As a non-native species, scorpionbush sits in that gray area where it’s not necessarily harmful, but it’s also not contributing to local ecosystems the way native plants do. Here are some things to consider:
The Appeal
- Produces small, attractive white flowers followed by bright red berries
- Dense, evergreen foliage provides year-round structure
- Compact size makes it suitable for smaller gardens and containers
- Flowers can attract small pollinators like bees
- Relatively low-maintenance once established
The Considerations
- As a non-native species, it doesn’t support local wildlife as effectively as native alternatives
- Limited to very warm climates (USDA zones 10-12 only)
- May self-seed and spread beyond intended areas
Growing Scorpionbush Successfully
If you’re in Hawaii or another tropical location and decide to grow scorpionbush, here’s how to keep it happy:
Growing Conditions
- Prefers full sun to partial shade
- Needs well-draining soil to prevent root rot
- Thrives in warm, humid conditions
- Cannot tolerate frost or freezing temperatures
Planting and Care Tips
- Water regularly during establishment, then reduce frequency as the plant matures
- Prune regularly to maintain desired shape and size
- Fertilize lightly during growing season with a balanced fertilizer
- Protect from strong winds which can damage the branches
- Monitor for pests common to tropical shrubs
Native Alternatives to Consider
If you’re interested in supporting local ecosystems while still getting that tropical shrub look, consider these native Hawaiian alternatives:
- Hawaiian native hibiscus species for colorful flowers
- Native Hawaiian mint family shrubs for aromatic foliage
- Indigenous berry-producing shrubs that support native birds
The Bottom Line
Scorpionbush can be a nice ornamental addition to tropical gardens, especially for those who appreciate its compact size and attractive berries. However, as conscious gardeners, it’s worth considering whether native alternatives might better serve both your landscape goals and local wildlife. If you do choose to grow scorpionbush, be mindful of its potential to self-seed and consider removing any volunteer seedlings that pop up beyond your intended planting area.
Remember, the best garden is one that brings you joy while also being thoughtful about its impact on the broader ecosystem. Whether that includes scorpionbush or not is ultimately up to you and your specific gardening goals.
