1. Appearance: Alamanda blanchetti is a woody, evergreen vine with a climbing or trailing habit. It has glossy, dark green leaves that are ovate or elliptical in shape. The plant produces large, trumpet-shaped flowers with five white petals and a yellow throat. The flowers are fragrant and can measure around 2-3 inches (5-8 cm) in diameter.

2. Growth and Size: The plant can reach a height of up to 15 feet (4.5 meters) or more, depending on the growing conditions. It typically has a spread of about 6-10 feet (1.8-3 meters). It is considered a fast-growing vine.

3. Sunlight and Temperature: Alamanda blanchetti thrives in full sun to partial shade. It prefers warm tropical or subtropical climates and is not frost-tolerant. In colder regions, it is commonly grown as a container plant that can be moved indoors during winter.

4. Soil and Watering: This vine prefers well-draining soil that is rich in organic matter. It can tolerate a range of soil types, including sandy or loamy soils. Regular watering is necessary to keep the soil moist but not waterlogged. Avoid overwatering, as it can lead to root rot.

5. Pruning and Maintenance: Pruning is beneficial to control the plant's size and shape. It can be done in early spring before new growth starts. Cut back any dead or damaged branches and remove excessive growth to encourage better flowering.

6. Propagation: Alamanda blanchetti can be propagated from stem cuttings. Take 6-8 inch (15-20 cm) cuttings from healthy, non-flowering stems. Remove the lower leaves and dip the cut end in rooting hormone. Plant the cutting in a well-draining potting mix and keep it in a warm, humid environment until it roots.

7. Caution: It's important to note that all parts of the Alamanda blanchetti plant are considered toxic if ingested, particularly the sap. Keep it away from children and pets.

Alamanda blanchetti is a beautiful vine that can add a touch of elegance to gardens, landscapes, or as a potted plant. Its showy white flowers and lush green foliage make it a visually appealing choice for tropical and subtropical regions.