Description
The ‘Baumannii’ Horsechestnut is a striking ornamental variety of the common horsechestnut, selected for its spectacular flowering and complete absence of fruit. Its large, upright panicles of double white flowers, reaching 25 to 30 cm, create a stunning visual display throughout May.
Introduced in the 19th century by German nurseryman Baumann of Bollwiller, this deciduous tree forms a broad, symmetrical crown with strong upright branches and dense ramification. It reaches a mature height of 10 to 20 metres, with a spread of 8 to 12 metres.
The flowering period is unusually long for a horsechestnut, lasting several weeks in May. The flowers are sterile, fully double, and pure white, grouped in large, conical upright clusters. No fruit is produced, making this tree ideal for urban settings where falling chestnuts can be a nuisance.
The foliage consists of large, palmate leaves, medium green, up to 20 cm across. In autumn, the leaves turn yellow before falling.
Growth is moderate to fast. ‘Baumannii’ adapts to various soil types, even slightly compacted ones, as long as they are moist and well-drained. It tolerates full sun to partial shade and is very hardy.
Ideal for street planting, parks, squares, schoolyards, and as a solitary specimen in large gardens. Its lack of fruit makes it especially suitable for pedestrian zones, playgrounds, and parking areas.
Low-maintenance. Formative pruning in early years helps shape a balanced crown. Monitoring for horsechestnut leaf miner may be necessary.
The Baumann Double Horsechestnut (Aesculus hippocastanum ‘Baumannii’) is an exceptional ornamental tree, valued for its long-lasting white bloom, symmetrical form, and absence of fruit. Perfect for urban environments, it avoids the mess of fallen chestnuts while offering dense shade and a majestic presence. Its flowering in May, abundant and eye-catching, enhances public spaces and large gardens. Hardy, adaptable, and low-maintenance, it suits parks, squares, street alignments, and private estates. Thanks to its sterile flowers, it remains clean and safe for high-traffic areas. ‘Baumannii’ is a top choice for anyone seeking a decorative, reliable, and functional city tree.
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