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AGM plants have been through a rigorous trial and assessment programme. They are:
This plant will provide nectar and pollen for bees and the many other types of pollinating insects.
It is included in an evolving list of plants carefully researched and chosen by RHS experts. Divided into 3 groups these lists, linked below, are maintained by a team of RHS staff and are reviewed annually.
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Other common names Baumann's horse chestnut
Synonyms Aesculus hippocastanum 'Flore Pleno'
Family Sapindaceae
Genus Aesculus can be deciduous trees or large shrubs with showy flowers, palmately-lobed leaves and sometimes good autumn colour
Details 'Baumannii' is a large, broad-crowned deciduous tree with large dark leaves of 5-7 leaflets. Flowers double, white with yellow marks that age to red. Fruit not developing
Foliage Deciduous
Habit Spreading / Branched
Toxicity Ingestion may cause severe discomfort
Hardiness
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H7
Full Sun
Partial Shade
Aspect North-facing or East-facing or South-facing or West-facing
Exposure Sheltered or Exposed
Chalk
Clay
Sand
Loam
MoistureWell-drained, Moist but well-drained
SoilChalk, Clay, Sand, Loam
pHAcid, Alkaline, Neutral
Ultimate height Higher than 12 metres
Ultimate spread wider than 8 metres
Time to ultimate height 20-50 years
Cultivation Only suitable for large gardens; grow in deep, fertile, moist but well-drained soil in sun or part shade
Propagation Propagate by hardwood cuttings from early to midwinter or by chip budding from mid to late summer
Suggested planting locations and garden types Low Maintenance Architectural Cottage & Informal Garden
Pruning Pruning group 1
Pests Can get horse chestnut scale and leaf-mining moths
Diseases A canker, Coral spot and a leaf spot may be a problem
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
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