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Virtually all of the features of the old searches are still available and in addition we have added several new features to create a more comprehensive and user friendly search experience.
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Search by plant name, key attributes or both to find plant details and a list of
AGM plants have been through a rigorous trial and assessment programme. They are:
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Other common names
witch hazel 'Arnold Promise'
Hamamelis � intermedia 'Arnold's Promise'
Hamamelis are deciduous shrubs with broadly ovate or rounded leaves, sometimes colouring well in autumn, and fragrant yellow to red flowers with 4 narrow petals, borne on the leafless branches in late winter and early spring, or in autumn
Hamamelidaceae / Hamamelidaceae
'Arnold Promise' is a large deciduous shrub of open habit with broadly ovate leaves which turn reddish or yellow in autumn, and fragrant bright yellow flowers to 3cm in width, in late winter
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
While we update our systems with the new hardiness ratings you may still see old hardiness ratings in your search results. These are denoted as 'Old'.
For full details of the hardiness ratings see
Aspect North-facing or East-facing or South-facing or West-facing
Exposure Sheltered or Exposed
MoistureWell-drained, Moist but well-drained
SoilLoam, Clay, Sand
Easy to grow in an acid to neutral, well-drained soil in sun or partial shade
Propagate by grafting
Suggested planting locations and garden types
Flower borders and beds Low Maintenance
Cottage & Informal Garden
Pruning group 2
Generally pest free
Coral spot may be a problem
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
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