Blue Spur Flower
Plectranthus ciliatus
Ciliatus
About this plant
Plectranthus ciliatus, commonly known as Blue Spur Flower, is a compact, bushy plant with attractive blue-purple flowers and soft, hairy leaves. It is often grown as a decorative houseplant or in shaded garden areas. Its charming flowers and easy care make it popular for adding color to indoor and outdoor spaces.
Taxonomy
- Genus
- Plectranthus
- Family
- Lamiaceae
- Higher classification
- Order Lamiales
- Plant type
- Houseplant
- Lifespan
- Perennial
Origin & Distribution
- Native region
- South Africa
- Distribution
- Native to South Africa, widely cultivated in gardens and as a houseplant worldwide in suitable climates.
Care
- Light preference
- Partial shade
- Suitable locations
- Indoor, Outdoor, Balcony, Greenhouse
- Preferred window facing
- East-facing, North-facing, Northeast-facing
- Watering frequency
- Moderate
- Watering interval
- 3–7 days
- Humidity
- Normal
- Minimum
- 10 °C
- Maximum
- 30 °C
- Optimal
- 18-24 °C
- USDA hardiness zones
- 9-11
- Soil pH
- 6.0-7.0 (slightly acidic to neutral)
- Soil type
- well-draining potting soil mix
Watering. Water when the top inch of soil feels dry. Avoid letting the plant sit in water to prevent root rot. Reduce watering in cooler months.
Fertilizing. Feed with a balanced, water-soluble fertilizer every 4-6 weeks during the growing season (spring and summer). Reduce feeding in fall and winter when growth slows.
Plectranthus ciliatus is an easy-to-care-for plant that thrives in partial shade and prefers well-draining soil. It needs moderate watering and can tolerate some neglect, making it suitable for beginners. Avoid overwatering to prevent root rot.
Propagation
- Propagation methods
- Cuttings
- Care difficulty
- Easy
Ornamental features
- Flowering
- Yes
- Flowering period
- summer
Soft, hairy leaves with a scalloped edge and striking blue-purple tubular flowers arranged in spikes.
Toxicity & Safety
- Toxic to humans
- Non-toxic
- Toxic to pets
- Non-toxic
- Weed potential
- Not considered a weed
Non-toxic to humans and pets, safe to keep around children and animals.
Allergy information
- Allergy risk
- Low
- Allergy triggers
- Skin contact
- Pollen level
- Low
Plectranthus ciliatus may cause mild skin irritation in sensitive individuals due to contact with its leaves. People with plant allergies should handle it with care and wear gloves if needed. It does not produce significant airborne pollen, so pollen allergies are unlikely.
Common problems
Overwatering can cause root rot, and poor drainage may lead to fungal issues. Insufficient light can make the plant leggy and reduce flowering. Occasionally, pests like aphids or spider mites may appear.
Uses
Primarily grown as an ornamental plant for its attractive foliage and flowers, suitable for indoor decoration and shaded garden spots.
Notes
Prune regularly to maintain shape and encourage bushier growth. Repot every 2-3 years or when root-bound. Protect from frost and cold drafts.