Cadillo: A Charming South American Groundcover Worth Considering
If you’re searching for an unusual groundcover that brings a touch of South American flair to your garden, cadillo (Acaena myriophylla) might just catch your eye. This low-growing perennial offers something a bit different from the typical groundcover suspects, though it’s definitely not your everyday garden plant.
What Exactly Is Cadillo?
Cadillo is a creeping perennial that belongs to the rose family, though you’d never guess it from looking at it. This compact plant produces intricate compound leaves and small, inconspicuous flowers that develop into the plant’s most distinctive feature: tiny burr-like seed heads covered in hooks. These little hitchhikers are actually quite charming in their own prickly way!
Where Does Cadillo Come From?
This interesting groundcover hails from South America, particularly the mountainous regions of Chile and Argentina. In its native habitat, it thrives in rocky, well-draining soils at higher elevations, which gives us some great clues about how to grow it successfully in our own gardens.
Why You Might Want to Grow Cadillo
Here are some compelling reasons to consider adding cadillo to your plant palette:
- Unique texture: The finely divided foliage creates an interesting carpet-like effect
- Low maintenance: Once established, it’s quite drought tolerant
- Rock garden star: Perfect for alpine and rock garden settings
- Conversation starter: Those hooked seed burrs are definitely a talking point
- Spreading habit: Can fill in spaces between rocks or pavers naturally
Potential Drawbacks to Consider
Before you fall head over heels for cadillo, here are a few things to keep in mind:
- Non-native status: Since it’s not native to North America, it won’t support local ecosystems like native plants do
- Limited availability: You might have to hunt around to find this plant at nurseries
- Those burrs: While charming, the hooked seeds can stick to clothing and pet fur
- Spreading nature: May spread more than expected in ideal conditions
Growing Conditions That Make Cadillo Happy
Cadillo is surprisingly adaptable, but it does have some preferences:
- Sunlight: Full sun to partial shade (morning sun is especially appreciated)
- Soil: Well-draining soil is absolutely essential – soggy conditions are a no-go
- Water: Moderate water needs; drought tolerant once established
- Climate: Hardy in USDA zones 7-9
- Soil pH: Adaptable to various pH levels
Perfect Garden Spots for Cadillo
This South American native shines in specific garden situations:
- Rock gardens and alpine collections
- Mediterranean-style landscapes
- Between stepping stones or pavers
- Slope stabilization (where drainage is good)
- Container gardens with good drainage
Planting and Care Tips
Growing cadillo successfully is mostly about getting the basics right:
Planting: Choose a spot with excellent drainage – this cannot be overstated! Amend heavy clay soils with gravel or coarse sand. Plant in spring after the last frost.
Watering: Water regularly the first season to help establish roots, then reduce frequency. This plant actually prefers to dry out between waterings.
Maintenance: Minimal care needed once established. You can trim back the seed heads if you find them too grabby, though many gardeners enjoy their unique appearance.
Wildlife and Pollinator Value
While cadillo does produce small flowers that may attract some minor pollinators, it’s not a powerhouse pollinator plant. The wildlife benefits are limited compared to native alternatives.
Consider Native Alternatives
If you’re interested in supporting local ecosystems, consider these native groundcovers instead:
- Wild ginger (Asarum canadense) for shaded areas
- Kinnikinnick (Arctostaphylos uva-ursi) for sunny, well-drained spots
- Native sedums for rock garden situations
The Bottom Line
Cadillo is an intriguing groundcover that can add unique character to the right garden setting. While it won’t support native wildlife like indigenous plants do, it’s not known to be invasive and can be a charming addition to rock gardens and Mediterranean-style landscapes. Just remember that good drainage is key to success, and be prepared for those charmingly clingy seed burrs!
Whether you choose cadillo or opt for native alternatives, the most important thing is creating a garden that brings you joy while being mindful of your local ecosystem.
