Acer platanoides Crimson King is a variety of the Norway Maple known for its striking, dark maroon to crimson-colored leaves that persist throughout the growing season. This deciduous tree provides a dramatic contrast to the typical green landscape, making it a favoured choice for both residential and public gardens.
In the landscape, Crimson King is often used as a specimen tree due to its bold colour and substantial canopy, which offers dense shade. It is also suitable for lining streets or as part of larger parkland plantings where its colour can be appreciated from afar. It makes a great tree in urban environments as it is tolerant of pollution and confined soil spaces.
Acer platanoides Crimson King prefers full sun to partial shade and thrives in well-drained, fertile soils. While it is adaptable to a variety of soil types, it performs best with regular watering, especially in dry conditions. Like many maples, it is relatively low-maintenance, requiring only occasional pruning to remove any dead or crossing branches and to maintain its shape.
The mature size of Crimson King is substantial, typically reaching heights of 12-15m with a spread of 8-10 meters. Its rounded crown makes it an excellent choice for providing large areas of shade.
Trimming: Prune in late autumn or winter when the tree is dormant, removing dead, damaged, or crossing branches. Avoid heavy pruning to preserve the natural shape, particularly for ornamental varieties like Japanese maples.
Fertilising: Apply a slow-release fertiliser formulated for trees or a balanced fertiliser in early spring. Avoid over-fertilising, which can cause leggy growth.
Watering: Keep soil consistently moist during the establishment phase and during dry spells, especially for shallow-rooted varieties like Japanese maples. Use mulch to retain moisture.
Pest Control: Monitor for aphids, scale insects, and caterpillars. Treat infestations with insecticidal soap or horticultural oil.
Disease Management: Watch for signs of verticillium wilt (wilting and yellowing leaves) and leaf spot diseases. Remove affected branches and ensure good drainage. Dispose of infected material to prevent the spread of disease.
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