Doryanthes is a genus of large succulent plants that are half hardy perennials.
They may reach from 2 to 4 metres in height, and have large red and white flowers that bloom in the summer.
Doryanthes is commonly known as the Gymea lily.
Doryanthes excelsa - Gymea Lilly by Rexness.
Common Names: Gymea Lily
Life Cycle: Half hardy perennial.
Height: 72 to 144 inches (200 to 400 cm); stalk up to 236 inches (600 cm).
Growing Region: Zones 10.
Flower Details: Red and white. Flower spike.
Foliage: Succulent. Sword-shaped. Rosette.
Sow Outside: Surface. Late summer and autumn using fresh seeds. Spacing: individual.
Sow Inside: Germination time: one to three months. Seeds should be soaked for a few hours. Temperature: 70°F (21°C), in the light. Once Doryanthes seedlings have emerged add gravel to the top layer in order to promote good drainage and for support. Transplant outdoors following the last frost, temperatures should not drop 50°F (10°C).
Requirements and care: Full sunlight. Good drainage. Hummus. Regular, heavy watering whilst growing. Light water throughout winter to ensure that soil remains moist. Propagate: plant bulbils once flowering has completed. Alternatively transplant rooted suckers.
Miscellaneous: May take over ten years for Doryanthes to first bloom. This plant is very attractive to honey-eater birds.
If growing Gymea lily outdoors then fresh seeds should be sown on the soil surface. They prefer to grow in a sunny area of the garden that has good drainage and a soil rich in humus. If you want to first grow seedlings inside then seed should be soaked in luke warm water for about 4 hours, and germinated in light at about 20 degrees centigrade. The seeds should then be supported by the use of a gravel.
The seedlings should then be planted individually outside; they are very large plants so only grow more than one in very large gardens and space them at least 4 metres apart to prevent them interfering with each other.
The soil that Doryanthes grows in should be kept moist, as they are very large plants this will require regular watering. If you want to crate more plants then Doryanthes can be propagated by planting root suckers once flowering has finished.
I hope that you enjoyed this guide on how to grow Doryanthes plants. Updated September 2020.