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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 rose mallow 'Cooperi'
Family Malvaceae
Genus 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
Details 'Cooperi' is a compact evergreen shrub with lance-shaped leaves heavily marbled and blotched with white and sometimes tinged pink; flowers red
Foliage Evergreen
Habit Bushy
Hardiness
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H1B
Partial Shade
Aspect South-facing or West-facing
Exposure Sheltered
Loam
MoistureWell-drained
SoilLoam
pHAlkaline, Neutral
Ultimate height 1-1.5 metres
Ultimate spread 0.5-1 metres
Time to ultimate height 5-10 years
Cultivation Under glass grow in a loam-based potting compost (JI No.2) in bright filtered light, providing moderate humidity and good ventilation. Water freely during the growing season and apply a balanced liquid fertiliser monthly. Water sparingly in winter
Propagation Propagate by seed at 13-18?C (55-64?F) in spring or propagate by semi-ripe cuttings in summer
Suggested planting locations and garden types Patio & Container Plants
Pruning Pruning group 9 little or no regular pruning evergreen shrubs
Pests Aphids, scale insects, mealybugs and glasshouse whitefly may be a problem when grown under glass
Diseases Powdery mildew may be a problem
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