Whitewort: A Lesser-Known Annual for Adventurous Gardeners
If you’ve stumbled across the name whitewort (Leucas martinicensis) in your plant research, you might be wondering what exactly this little-known annual brings to the garden table. While it’s not a household name like marigolds or petunias, whitewort has quietly made itself at home in some tropical locations, including the U.S. Virgin Islands.





What Is Whitewort?
Whitewort is an annual forb – essentially a non-woody plant that completes its entire life cycle in one growing season. As a member of the forb family, it lacks the significant woody tissue you’d find in shrubs or trees, instead developing soft, herbaceous growth that dies back each year.
The plant’s growth habit is typical of forbs, with perennating buds (the parts that survive to restart growth) located at or below ground level. This strategy helps the plant survive challenging conditions and regenerate when favorable growing conditions return.
Where Does Whitewort Grow?
Geographically, whitewort has established itself in the Virgin Islands, where it’s considered a non-native species that reproduces spontaneously in the wild. This means it can spread and maintain populations without human intervention, though it’s not currently classified as invasive or problematic.
Should You Grow Whitewort in Your Garden?
Here’s where things get a bit tricky for the average gardener. While whitewort isn’t considered harmful or invasive, there’s limited information available about its specific growing requirements, aesthetic qualities, or garden performance. This makes it a bit of a wild card for most gardening situations.
Growing Conditions and Care
Unfortunately, detailed growing information for whitewort is scarce in readily available gardening resources. What we do know is that as an annual forb, it likely prefers:
- Warm growing conditions (given its presence in tropical locations)
- Well-draining soil
- Regular moisture during its growing season
However, without specific information about its preferred soil pH, light requirements, or spacing needs, growing whitewort successfully would involve some experimentation.
Consider Native Alternatives
If you’re gardening in or near the Virgin Islands and are interested in adding annual forbs to your landscape, you might want to consider native alternatives that offer similar growth habits but provide known benefits to local wildlife and ecosystems. Native plants are typically better adapted to local growing conditions and require less guesswork when it comes to care requirements.
Some benefits of choosing native alternatives include:
- Better adaptation to local climate and soil conditions
- Known wildlife and pollinator benefits
- Established care guidelines and growing information
- Support for local ecosystem health
The Bottom Line
While whitewort isn’t necessarily a plant to avoid, it’s also not one that comes with a wealth of growing information or proven garden benefits. For most gardeners, especially those new to native and naturalized plantings, focusing on well-documented native species or popular non-native plants with established care guidelines might be a more practical approach.
If you’re an experienced gardener who enjoys experimenting with unusual plants, whitewort could be an interesting addition to a diverse plant collection – just be prepared for some trial and error in figuring out its preferences!