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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 heart-leaved houttuynia
Family Saururaceae
Genus Houttuynia are rhizomatous perennials with pungently orange-scented, heart-shaped leaves and tiny yellow flowers in spikes with usually 4 prominent white bracts at the base
Details H. cordata is a wide-spreading herbaceous perennial to 30cm in height, with dull blue-green leaves and dense flower spikes in late spring
Plant range E Himalaya to Japan
Foliage Deciduous
Habit Clump-forming
Fragrance Foliage
Hardiness
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H6
Full Sun
Partial Shade
Aspect South-facing or West-facing
Exposure Exposed or Sheltered
Clay
Loam
Sand
MoistureMoist but well-drained, Poorly-drained
SoilClay, Loam, Sand
pHAcid, Alkaline, Neutral
Ultimate height 0.1-0.5 metres
Ultimate spread 0.5-1 metres
Time to ultimate height 2-5 years
Cultivation Tolerant of a range of soils from dry to wet in sun or shade. Can be prone to spreading, especially in wet soils, by underground stems; ideal for containers where its spread can be restricted
Propagation Propagate by seed or division in spring or take semi-ripe cuttings of young basal shoots
Suggested planting locations and garden types Flower borders and beds Garden Edging Low Maintenance Cottage & Informal Garden
Pruning Divide regularly to limit spread
Pests Generally pest free
Diseases Generally disease free
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
heart-leaved houttuynia
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