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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 Chinese meadow rue 'Album'
Family Ranunculaceae
Genus Thalictrum can be rhizomatous or tuberous perennials with ternately or pinnately divided, often attractive foliage, and panicles or racemes of small flowers with showy stamens and sometimes large colourful petal-like sepals
Details an upright herbaceous perennial growing to around 1.5m, with leaves divided into many small oblong leaflets, and large open panicles of white flowers 2cm in width with prominent stamens.
Foliage Deciduous
Habit Clump-forming
Hardiness
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H6
Partial Shade
Aspect East-facing or West-facing or South-facing
Exposure Sheltered
Chalk
Clay
Loam
MoistureMoist but well-drained
SoilChalk, Clay, Loam
pHAcid, Alkaline, Neutral
Ultimate height 1.5-2.5 metres
Ultimate spread 0.1-0.5 metres
Time to ultimate height 2-5 years
Cultivation Grow in moist, humus-rich soil in partial shade. May need staking. See staking perennials for further advice.
Propagation Propagate by seed in pots in a cold frame as soon as seed is ripe or in early spring. Propagate by division in spring as new growth begins
Suggested planting locations and garden types Flower borders and beds Cottage & Informal Garden Gravel Garden
Pruning In late autumn or early winter the faded flower stems cam be cut back to ground level to tidy the plant if required.
Pests Generally pest-free
Diseases May be subject to powdery mildews in dry conditions
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