Acer rubrum L.
Acer rubrum is a tree.
Acer rubrum was described by Carl Linnaeus in 1753. The name is considered as validly published.
Acer rubrum is a species 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 are comparatively fast-growing and short-lived. They have a rounded canopy and reach heights of 10 to 15 metres. The plants reach a width of 6 to 15 metres.
Wood and Bark
The bark is smooth and grey.
Acer rubrum is deciduous. The green, simple leaves are opposite. They are palmately lobed and petiolate with serrate margins and palmate venation. The surface of the leaves is glabrous to hirsute. They turn an attractive yellow, orange, bright orange to red in autumn.
Flowers and Fruits
Acer rubrum produces cluster of erect, crimson five-stellate flowers from March to April. The plants flower on older shoots. They are dioecious, pollination takes places by allogamy through animals.
The trees produce ornamental red schizocarps in spring.
The plants form deep-reaching roots.
Acer rubrum is native to the Northeast of the US.
The trees prefer a sunny situation on fresh to moist soil. They prefer sandy-loamy or gritty-loamy soil with a pH between 4,7 and 7,3. The plants need a soil depth of at least 76 centimetres for good growth. They tolerate temperatures down to -35Â°C (USDA zone 4).
Classification after Prof. Dr. Sieber
- open areas
Tolerance of special soil conditions
- none: calcareous soil
- high: city climate
The recommended planting distance is 4,5 to 5,5 metres. Suited for rooftop gardens, as well as suited as cemetery plant, avenue tree, container plant, specimen plant and as greenery along roads.
Maintenance and Propagation
The plants usually need very little maintenance.
Acer rubrum is slightly toxic.
Please read the health issues note!
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.