Acer saccharum subsp. grandidentatum
Acer saccharum subsp. grandidentatum (Nutt. ex Torr. & A.Gray) Desmarais
Acer saccharum subsp. grandidentatum is a tree.
Acer saccharum subsp. grandidentatum was already described and the name validly published by John Torrey and Asa Gray. It was Yves Desmarais, however, who reclassified it into todays valid botanical systematics in 1952.
Acer saccharum subsp. grandidentatum is a subspecies in the genus Acer which contains approximately 230 to 296 species and belongs to the family of the Aceraceae (Maple Family). The type species of the genus is Acer pseudoplatanus.
The trees reach heights of 8 to 10 metres, the main growing season is in spring and summer. They have a rounded to broadly spreading canopy and are comparatively short-lived.
Wood and Bark
Acer saccharum subsp. grandidentatum is deciduous. The dark-green, simple leaves are opposite. They are palmately lobed and petiolate with dentate margins and palmate venation. The surface of the leaves is puberulent. The foliage is porous and turns an attractive yellow, orange, bright orange to red in autumn.
Flowers and Fruits
Acer saccharum subsp. grandidentatum produces showy corymbs of erect, green five-stellate flowers from March to April. The plants are dioecious.
In summer the trees carry schizocarps.
The plants form fibrous roots.
The trees prefer a sunny situation on moist soil. They prefer sandy-loamy or gritty-loamy soil with a pH between 6 and 8. The plants need a soil depth of at least 61 centimetres for good growth. They need a frost-free period of at least 14 weeks.
Tolerance of special soil conditions
- none: soil salinity, calcareous soil
- low: anaerobic soil, drought
The recommended planting distance is 2 to 2,4 metres. From a commercial point of view the trees can be used to produce posts. The plants have high potential for fuelwood production.
Maintenance and Propagation
Propagate by sowing. The seeds require vernalization.
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.