Squarestem: A Tropical Beauty for Warm Climate Gardens
If you’re looking for a plant that brings tropical flair to your garden with stunning orange-red blooms and velvety foliage, squarestem (Chrysothemis pulchella) might catch your eye. This perennial forb has been making its way into gardens and homes across Puerto Rico, where it’s found a comfortable second home despite its foreign origins.
What Makes Squarestem Special?
Squarestem is a real showstopper when it comes to visual appeal. Its heart-shaped, velvety leaves create a lush backdrop for clusters of vibrant orange to red tubular flowers. The leaves themselves are quite striking, featuring prominent veining that adds texture and interest even when the plant isn’t in bloom. As a herbaceous perennial, it lacks woody stems but makes up for it with its soft, inviting foliage that practically begs to be touched.
Where Does Squarestem Come From?
While squarestem has established itself in Puerto Rico, it’s actually a traveler from Central and South America, particularly native to countries like Colombia and Venezuela. It’s what we call a non-native species that has been introduced and now reproduces on its own in Puerto Rican landscapes.
Should You Grow Squarestem in Your Garden?
The decision to grow squarestem depends on your location and gardening goals. Here are some factors to consider:
The Good
- Gorgeous, eye-catching flowers that attract hummingbirds
- Beautiful foliage that provides year-round interest
- Works well as both a houseplant and outdoor tropical garden specimen
- Perennial nature means it returns year after year in suitable climates
The Considerations
- Only suitable for USDA hardiness zones 10-12 (think southern Florida and Hawaii)
- As a non-native species, it doesn’t support local ecosystems like native plants do
- Requires very specific growing conditions that can be challenging to maintain
Growing Conditions and Care
Squarestem is definitely a diva when it comes to its growing requirements. This tropical beauty needs just the right conditions to thrive:
Climate Requirements
- Warm temperatures between 65-80°F year-round
- High humidity levels
- Protection from cold temperatures and frost
Light and Soil
- Bright, indirect light (too much direct sun can scorch the leaves)
- Well-draining soil that retains some moisture
- Rich, organic matter helps support healthy growth
Watering and Maintenance
- Consistent moisture without waterlogging
- Regular misting to maintain humidity
- Deadheading spent flowers to encourage continued blooming
Garden Design Ideas
If you live in a suitable climate and decide to grow squarestem, it works wonderfully in tropical-themed gardens, container displays, or as a houseplant. Its compact size and colorful blooms make it perfect for adding pops of color to shaded garden areas or bringing tropical vibes to indoor spaces.
Consider Native Alternatives
While squarestem can be a beautiful addition to appropriate gardens, consider exploring native alternatives that provide similar aesthetic appeal while supporting local wildlife and ecosystems. Native plants are typically easier to grow, require less maintenance, and provide food and habitat for local pollinators and wildlife.
The Bottom Line
Squarestem is undeniably beautiful and can be a rewarding plant to grow if you can provide its specific requirements. However, its demanding nature and non-native status mean it’s not the right choice for every gardener. If you’re in zones 10-12 and love a gardening challenge, squarestem might be worth trying. Otherwise, you might find more success and ecological benefit with native flowering plants that offer similar tropical appeal.
