Grand Duke of Tuscany Jasmine Plant (Jasminum sambac ‘Grand Duke of Tuscany’)
The Grand Duke of Tuscany Jasmine is a beautiful, evergreen shrub prized for its highly fragrant, double, rose-like white flowers. A cultivar of Jasminum sambac, this variety is widely grown as an ornamental plant and is celebrated for its use in perfumes and teas.
Key Features
Common Name: Grand Duke of Tuscany Jasmine
Botanical Name: Jasminum sambac ‘Grand Duke of Tuscany’
Family: Oleaceae
USDA Hardiness Zones: 9–11 (can be grown in pots and overwintered indoors in colder zones)
Mature Size: 3–6 feet tall and 2–3 feet wide
Light Requirements: Full sun to partial shade
Soil Requirements: Well-draining, slightly acidic to neutral soil with good organic content
Growth Rate: Moderate
Notable Characteristics
Flowers:
Large, double, white blooms resembling small roses.
Intensely fragrant, especially during evenings.
Blooms intermittently throughout the year in warm climates.
Foliage:
Dark green, glossy, ovate leaves.
Evergreen in suitable climates, providing year-round appeal.
Growth Habit:
Bushy, compact, and suitable for container gardening or small garden spaces.
Can be trained into a topiary or grown as a shrub.
Care Requirements
Planting:
Choose a sunny location with 6–8 hours of sunlight daily.
If planting in a pot, use a container with good drainage and a high-quality potting mix.
Watering:
Keep soil consistently moist but not soggy.
Reduce watering slightly in winter if growth slows.
Fertilizing:
Feed with a balanced, slow-release fertilizer during the growing season (spring to early fall).
Use a fertilizer for acid-loving plants to maintain vibrant foliage and blooms.
Pruning:
Prune lightly after flowering to maintain shape and encourage new growth.
Remove dead or leggy branches to improve airflow.
Temperature & Humidity:
Thrives in warm, humid conditions.
Protect from frost in colder climates by moving potted plants indoors during winter.
Pest and Disease Management
Pests: Susceptible to spider mites, whiteflies, and aphids. Use insecticidal soap or neem oil as needed.
Diseases: Watch for root rot and powdery mildew in poorly ventilated or waterlogged conditions.
Propagation
Cuttings: Propagate from semi-hardwood cuttings in spring or summer.
Layering: Air layering is another effective propagation method.
Uses
Ornamental:
Ideal for patios, balconies, or garden borders where its fragrance can be enjoyed.
Culinary:
Flowers are used to scent teas and desserts, especially in Southeast Asian cuisines.
Aromatic:
Popular for crafting leis, perfumes, and essential oils.
Tips for Success
Place in a location where you can enjoy its delightful fragrance, such as near a window or seating area.
Use a humidifier or mist the plant during dry periods to encourage blooming indoors.
Protect from intense midday heat in extremely hot climates.
With its elegant blooms and intoxicating fragrance, the Grand Duke of Tuscany Jasmine adds beauty and charm to any garden or indoor space, making it a favorite among jasmine enthusiasts worldwide.