Rue
Ruta graveolens
About this plant
Rue is a woody perennial herb known for its strong, bitter aroma and bluish-green leaves. It has small yellow flowers and has been traditionally used for medicinal and ornamental purposes. Rue is often grown in herb gardens and can act as a natural pest deterrent.
Taxonomy
- Genus
- Ruta
- Family
- Rutaceae
- Higher classification
- Sapindales
- Plant type
- Herb
- Lifespan
- Perennial
Origin & Distribution
- Native region
- Mediterranean Basin
- Distribution
- Native to the Mediterranean region; cultivated worldwide in temperate climates.
Care
- Light preference
- Full sun
- Suitable locations
- Outdoor, Balcony, Greenhouse
- Preferred window facing
- South-facing, West-facing
- Watering frequency
- Moderate
- Watering interval
- 7–14 days
- Humidity
- Low
- Minimum
- -10 °C
- Maximum
- 35 °C
- Optimal
- 15-25 °C
- USDA hardiness zones
- 7-10
- Soil pH
- 6.0-7.5 (neutral to slightly acidic)
- Soil type
- well-draining soil, sandy or loamy
Watering. Allow the soil to dry out between waterings. Avoid waterlogging to prevent root rot.
Fertilizing. Apply a balanced fertilizer in early spring to support growth. Rue generally does not require heavy feeding and can thrive in poor soils.
Rue is a hardy herb that prefers full sun and well-drained soil. It tolerates dry conditions well but dislikes overwatering. It requires occasional pruning to keep its shape and prevent it from becoming too woody.
Propagation
- Propagation methods
- Seeds, Cuttings, Division
- Care difficulty
- Medium
Ornamental features
- Flowering
- Yes
- Flowering period
- summer
Bluish-green, finely divided leaves with a strong scent; small clusters of yellow flowers in summer; woody stems.
Toxicity & Safety
- Toxic to humans
- Mildly toxic
- Toxic to pets
- Mildly toxic
- Weed potential
- Potentially invasive
Rue's sap can cause skin irritation and sensitivity to sunlight. Keep away from children and pets as ingestion can be harmful.
Allergy information
- Allergy risk
- Moderate
- Allergy triggers
- Sap or latex, Fragrance, Skin contact
- Pollen level
- Low
Rue can cause skin irritation or allergic reactions in some people, especially if you have sensitive skin. The main triggers are its sap and strong smell. To reduce exposure, wear gloves when handling and avoid touching your face.
Common problems
Overwatering can cause root rot. Rue may also suffer from leaf spots or powdery mildew if air circulation is poor or humidity is high.
Uses
Used as an ornamental herb, traditional medicine, and natural insect repellent.
Notes
Wear gloves when pruning to avoid skin irritation. Rue can be invasive in some areas, so monitor its spread. Repotting is rarely needed as it prefers to be slightly root-bound.