Darwin's Slipper Flower (Calceolaria uniflora)
uniflora
About this plant
Calceolaria uniflora is a small, perennial flowering plant known for its unique slipper-shaped yellow and red flowers that resemble little pouches. It is native to southern South America and is admired for its unusual and attractive blooms. Often grown as an ornamental plant, it adds a splash of color to shaded garden areas or indoor collections.
Taxonomy
Higher classification: Lamiales
Origin & Distribution
- Native region
- Argentina, Chile
- Distribution
- Native to southern Argentina and Chile, especially in subantarctic regions; cultivated in gardens worldwide in suitable climates.
Care
- Suitable locations
- Indoor, Outdoor, Greenhouse
- Preferred window facing
- East-facing, North-facing, Northeast-facing
- USDA hardiness zones
- 8–10
- Soil pH
- 5.5–6.5
- Soil type
- well-draining loam, rich in organic matter
Watering. Keep soil consistently moist but not soggy. Water when the top inch of soil feels dry. Avoid letting the plant sit in water to prevent root rot.
Fertilizing. Feed with a balanced, water-soluble fertilizer every 4 to 6 weeks during the growing season to support healthy growth and flowering.
Calceolaria uniflora prefers cool, shaded environments and moist but well-drained soil. It can be sensitive to too much heat or direct sunlight, which may cause leaf damage. Regular watering is needed, but avoid waterlogging. It requires moderate care and attention to thrive.
Propagation
- Propagation methods
- Seeds, Cuttings
Ornamental features
- Flowering
- Yes
- Flowering period
- spring–summer
Distinctive pouch-shaped yellow and red flowers, attractive green foliage.
Toxicity & Safety
Non-toxic to humans and pets; safe to have around children and animals.
Allergy information
Calceolaria uniflora is not known to cause allergies. People sensitive to plant pollen or sap are unlikely to have reactions from this plant. It is generally safe to keep around without special precautions.
Common problems
Overwatering can cause root rot, while too much direct sun may scorch the leaves. Pests like aphids may occasionally appear.
Uses
Primarily grown as an ornamental plant for its unique and colorful flowers, suitable for shaded garden spots or indoor decoration.
Notes
Prune spent flowers to encourage more blooms. Repot every 1–2 years to refresh soil. Protect from frost and extreme heat.