Acacia koa A.Gray
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Acacia koa is a tree.
Acacia koa was described by Asa Gray in 1854. The name is considered as validly published.
The comparatively long-lived trees reach heights of 30 to 34 metres, they have a erect habit and produce a single stem. The main growing season is all year round.
Wood and Bark
Acacia koa is evergreen. The dark-green, bipinnate leaves are alternate. The leaflets are ovate and have entire margins.
Flowers and Fruits
Acacia koa produces yellow globose flowers from March to May.
From spring to summer the trees produce brown legumes that are persistent on the plant.
The trees prefer a sunny situation. They prefer sandy, gritty-sandy, loamy, sandy-loamy, gritty-loamy, clay, sandy clay or loamy clay soil with a pH between 5 and 7. The plants need a soil depth of at least 76 centimetres for good growth. They tolerate temperatures down to -40Â°C (USDA zone 3) and need a frost-free period of at least 52 weeks.
Tolerance of special soil conditions
- none: soil salinity, anaerobic soil
- medium: drought, calcareous soil
From a commercial point of view the trees can be used to produce naval stores and veneer.
Maintenance and Propagation
Propagate by sowing or by cuttings.
Pests and Diseases
- Walter Erhardt, Erich GÃ¶tz, Nils BÃ¶deker, Siegmund Seybold: Der groÃe Zander. Eugen Ulmer KG, Stuttgart 2008, ISBN 978-3-8001-5406-7. (Ger.)
- Christoper Brickell (Editor-in-chief): RHS A-Z Encyclopedia of Garden Plants. Third edition. Dorling Kindersley, London 2003, ISBN 0-7513-3738-2.