Acer saccharum subsp. nigrum
Acer saccharum subsp. nigrum (F.Michx.) Desmarais
Acer saccharum subsp. nigrum is a tree.
Acer saccharum subsp. nigrum was already described and the name validly published by FranÃ§ois AndrÃ© Michaux. It was Yves Desmarais, however, who reclassified it into todays valid botanical systematics in 1952.
Acer saccharum subsp. nigrum 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 comparatively short-lived trees have a erect habit and produce a single stem. The main growing season is in spring and summer.
Wood and Bark
Acer saccharum subsp. nigrum is deciduous. The simple leaves are opposite. They are palmately lobed and petiolate with lobate margins and palmate venation. The surface of the leaves is tomentose. The foliage is dense in summer and porous in winter.
Flowers and Fruits
Acer saccharum subsp. nigrum produces corymbs of erect, yellow five-stellate flowers in April.
The trees carry ornamental, edible schizocarps from summer to autumn.
Acer saccharum subsp. nigrum is native to eastern Canada, the Northeast of the US and the central Northeast of the US.
The trees prefer a sunny to half-shady situation on moist soil. They prefer sandy-loamy or gritty-loamy soil with a pH between 4,5 and 7,3. The plants need a soil depth of at least 76 centimetres for good growth. They tolerate temperatures down to -29Â°C (USDA zone 5) and need a frost-free period of at least 19 weeks.
Tolerance of special soil conditions
- none: soil salinity
- low: anaerobic soil
- medium: drought, calcareous soil
- high: city climate
The ornamental value of Acer saccharum subsp. nigrum lies especially in the attractive autumn aspect. From a commercial point of view the trees can be used to produce naval stores and veneer.
Maintenance and Propagation
The plants usually require only a moderate amount of maintenance.
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.