Persian Violet
Exacum affine
About this plant
Exacum affine, commonly called Persian Violet, is a small, charming flowering plant known for its delicate, star-shaped blue to violet flowers with a sweet fragrance. It is often grown as a decorative houseplant or in shaded garden spots. The plant has glossy green leaves and blooms mainly in spring and summer. It is appreciated for its attractive flowers and pleasant scent.
Taxonomy
- Genus
- Exacum
- Family
- Gentianaceae
- Higher classification
- Gentianales
- Plant type
- Houseplant
- Lifespan
- Annual
Origin & Distribution
- Native region
- Yemen
- Distribution
- Native to Yemen, but cultivated worldwide as an ornamental plant, especially in temperate regions.
Care
- Light preference
- Bright indirect
- Suitable locations
- Indoor, Balcony, Greenhouse
- Preferred window facing
- East-facing, North-facing, Northeast-facing
- Watering frequency
- Moderate
- Watering interval
- 2–4 days
- Humidity
- High
- Minimum
- 10 °C
- Maximum
- 25 °C
- Optimal
- 15–22 °C
- USDA hardiness zones
- 10–11
- Soil pH
- 6.0–7.0 (slightly acidic to neutral)
- Soil type
- well-draining potting soil mix
Watering. Keep the soil consistently moist but not waterlogged. Water when the top inch of soil feels dry. Avoid letting the plant sit in standing water to prevent root rot.
Fertilizing. Feed with a balanced, water-soluble fertilizer every 2-4 weeks during the growing season (spring and summer). Avoid over-fertilizing, which can harm the plant.
Exacum affine is a moderately easy plant to care for, thriving in bright indirect light and needing regular watering to keep the soil moist but not soggy. It prefers cooler temperatures and higher humidity. Watch out for overwatering, which can cause root rot, and provide good air circulation to prevent fungal issues.
Propagation
- Propagation methods
- Seeds
- Care difficulty
- Medium
Ornamental features
- Flowering
- Yes
- Flowering period
- spring–summer
Glossy green leaves and small, fragrant, star-shaped blue to violet flowers.
Toxicity & Safety
- Toxic to humans
- Non-toxic
- Toxic to pets
- Non-toxic
- Weed potential
- Not considered a weed
Non-toxic to humans and pets, making it safe for homes with children and animals.
Allergy information
- Allergy risk
- Low
- Allergy triggers
- Sap or latex, Skin contact
- Pollen level
- Low
Exacum affine may cause mild skin irritation in sensitive individuals due to its sap. It is not known for airborne pollen allergies. To reduce exposure, avoid direct contact with the plant's sap and wash hands after handling.
Common problems
Common problems include root rot from overwatering, leaf yellowing from poor drainage, and fungal diseases if air circulation is poor. It may also suffer if exposed to direct harsh sunlight or very dry air.
Uses
Primarily grown as an ornamental houseplant for its attractive and fragrant flowers.
Notes
Prune spent flowers to encourage more blooms. Repot annually or when rootbound, using well-draining soil. Sensitive to cold drafts and dry air; maintain humidity with misting or a humidity tray.