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Description
Agathis Robusta, also known as the Queensland Kauri or Smooth-barked Kauri, is a large evergreen tree that belongs to the Araucariaceae family. It is native to Australia and Papua New Guinea and can grow up to 50 meters in height with a trunk diameter of up to 2 meters. The tree has a conical shape with a straight trunk and a dense crown of branches. The leaves are lanceolate and can grow up to 10 centimeters in length. The bark is smooth and grey-brown in color, and the wood is highly valued for its quality and strength.
Taxonomic Information
| Domain| Eukaryota|| Kingdom| Plantae|| Phylum| Pinophyta|| Class| Pinopsida|| Order| Pinales|| Family| Araucariaceae || Genus| Agathis|| Species| Agathis Robusta |
Appearance
Agathis Robusta is a large, evergreen tree that has a conical shape with a straight trunk and a dense crown of branches. The leaves are lanceolate and can grow up to 10 centimeters in length. The bark is smooth and grey-brown in color, and the wood is highly valued for its quality and strength. The tree produces male and female cones, with the male cones being smaller than the female cones. The female cones can grow up to 20 centimeters in length and contain between 80 to 100 seeds.
Care Guide
Agathis Robusta requires regular watering, especially during the summer months. It prefers well-draining soil that is rich in organic matter. The tree also requires regular fertilization to maintain healthy growth. It prefers full sun to partial shade and can tolerate a wide range of temperatures, making it hardy in zones 9-11. However, it is important to protect the tree from frost during the winter months.
Common Pests & Diseases
Agathis Robusta is susceptible to a variety of pests and diseases, including scale insects, spider mites, and root rot. Scale insects can be controlled by using insecticidal soap or neem oil, while spider mites can be controlled by spraying the tree with water or using an insecticidal soap. Root rot can be prevented by ensuring that the soil is well-draining and not waterlogged.
Habitat
Agathis Robusta is native to Australia and Papua New Guinea and can be found in rainforests and humid areas. It prefers well-draining soil that is rich in organic matter and can grow in a wide range of temperatures.
Question and Answer
Q: Can Agathis Robusta be grown in containers?
A: While it is possible to grow Agathis Robusta in containers, it is not recommended as the tree can grow up to 50 meters in height and requires a lot of space to grow properly.
Q: Is Agathis Robusta drought-tolerant?
A: Agathis Robusta prefers regular watering and is not drought-tolerant. It is important to ensure that the soil is well-draining and does not become waterlogged.
Q: Does Agathis Robusta produce edible fruit?
A: No, Agathis Robusta does not produce edible fruit.
Q: What is the lifespan of Agathis Robusta?
A: Agathis Robusta can live for up to 1000 years under favorable conditions.
Related Plants
– Agathis Dammara- Agathis Endertii- Agathis Flindersensis- Agathis Lanceolata
References
– “Agathis Robusta.” Australian National Botanic Gardens. https://www.anbg.gov.au/gnp/interns-2005/agathis-robusta.html- “Agathis Robusta.” Trees of Stanford & Environs. https://trees.stanford.edu/ENCYC/AGATHISr.htm- “Agathis Robusta.” PlantNet. https://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Agathis~robusta
