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Gymea Lilies - Doryanthes excelsa. Everything about the Gymea lily (Doryanthes excelsa) is larger than life. The bold foliage can reach over four metres in height and some majestic flower stems can reach over ten metres tall.
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Allamanda cathartica, the yellow trumpet vine, is a woody evergreen climbing shrub with large, showy bright yellow flowers in summer and autumn. Suitable for tropical, sub-tropical and warm, sheltered spots in temperate climates. It is fast growing, and the foliage is an attractive glossy green. It can be trained to cover fences and arbours, and also a standard.
Allamanda likes a fertile soil, and regular watering. Prune in early spring to encourage new flowering growth, and to shape the plant to the desired size.
Allamanda can become invasive in some areas.
The plant exudes a milky sap, which can be a skin irritant.
Flower colour: yellow
Flowering season: summer autumn
Maximum height: 10 metres
Minimum height: 2 metres
Maximum width: 5 metres
Minimum width: not specified
This plant will tolerate full or partial sunlight.
Light frost tolerance.
Plant is not salt tolerant.
Yes. Attracts: Butterflies, birds.
This plant species will grow in the following climates: temperate, subtropical, tropical.
Loam: moist, well-drained.
Clay: moist, well-drained.
Soil pH: 6.0-7.5
Planting season: Any.
Types of fertiliser: Good general purpose fertiliser.