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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 rigourous trial and assessment programme. They are:
© � RHS 1997
Other common names
Rose mallow 'Red Heart'
Hibiscus can be deciduous or evergreen shrubs, trees, annuals or perennials, with simple or palmately lobed leaves and large, funnel-shaped flowers over a long flowering season
Malvaceae / Malvaceae
'Red Heart' is a medium-sized deciduous shrub of upright habit, with lobed dark green leaves. Flowers single, to 10cm in width, pure white with conspicuous deep red centres, from late summer
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 South-facing or West-facing
MoistureWell-drained, Moist but well-drained
SoilChalk, Clay, Sand, Loam
Grow in a moist but well-drained soil in a sheltered position in full sun
Propagate by semi-hardwood cuttings
Suggested planting locations and garden types
City & Courtyard Gardens
Pruning group 1
Generally pest free
Powdery mildews may be a problem
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