Butterfly Plant ‘Calico Tom’ (Oxalis triangularis)
The Butterfly Plant ‘Calico Tom’, a variety of Oxalis triangularis, is a captivating plant prized for its striking foliage. Its triangular, butterfly-shaped leaves come in a mix of deep purple and green, often accented by delicate flowers. This plant is a showstopper in both indoor and outdoor gardens and is relatively easy to care for.
Key Characteristics
Scientific Name: Oxalis triangularis ‘Calico Tom’
Common Names: Butterfly Plant, False Shamrock, Purple Shamrock
Plant Type: Herbaceous perennial (grown as an annual in colder climates or indoors)
Height: 6–12 inches (15–30 cm)
Spread: 8–18 inches (20–45 cm)
Light Requirements: Bright, indirect light or partial shade
Soil Requirements: Well-draining soil
Temperature: Prefers warmth (60°F–75°F / 15°C–24°C)
Flower Color: Pink or white
Hardiness Zones: USDA zones 8–11 (grow as a houseplant in cooler zones)
Care Instructions
1. Light
Place in bright, indirect light to maintain the vibrant coloration of the foliage.
Outdoors, plant in partial shade. Too much direct sunlight can scorch the leaves.
2. Soil
Use a well-draining potting mix, such as one formulated for houseplants.
Adding sand or perlite to the mix can improve drainage for outdoor plantings.
3. Watering
Water when the top inch of soil feels dry.
Avoid overwatering, as Oxalis triangularis is prone to root rot.
Reduce watering during the plant’s dormancy period (typically late fall to winter).
4. Temperature and Humidity
Temperature: Prefers temperatures between 60°F–75°F (15°C–24°C).
Humidity: Normal household humidity is sufficient, but higher humidity can encourage growth.
5. Fertilizer
Feed every 2–3 weeks during the growing season (spring and summer) with a balanced liquid fertilizer.
No need to fertilize during dormancy.
6. Dormancy
The plant naturally goes dormant, usually in the late fall or winter. During this time:
Reduce watering and stop fertilizing.
Allow the leaves to die back, then cut them off.
Keep the tubers in dry soil in a cool, dark location until new growth appears in the spring.
Propagation
