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All ratings refer to the UK growing conditions unless otherwise stated. Minimum
temperature ranges (in degrees C) are shown in brackets
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.
T. cordifolia is a stoloniferous herbaceous perennial to 30cm in height, with 3 to 5-lobed, broadly ovate leaves becoming bronze-tinged in autumn, and erect stems bearing open racemes of small, creamy-white flowers
'Mystic Mist' is a clump-forming perennial to around 25cm tall with deeply-lobed, bright green leaves with white speckled variegation and prominent red veins. Leaves take on pink tones in the autumn. Whorls of pale pink-white flowers are borne on upright stems in late spring and early summer
'Sugar and Spice' is a compact perennial, to 35cm high, with dissected, lobed to palmate, tiered, mid-green leaves with striking, dark-brown, central markings. Small, pale-pink flowers are clustered along each flower stem giving a frothy, wand-like appearance. Flowers appear from spring to early summer
T. wherryi is a compact herbaceous perennial to 25cm in height, forming a clump of deeply 3-lobed, purple-tinted leaves with narrow, erect racemes of small, white or pinkish flowers from late spring
'Spring Symphony' is a clump-forming herbaceous perennial, to about 30cm, with deeply-lobed, green leaves marked with dark purple along the midribs. Upright stems carry spires of small, starry, creamy-white flowers, opening from pale pink buds, in late spring and early summer
'Angel Wings' is a small, neat, hybrid perennial that has very dissected, lobed and sometimes tiered, mid-green leaves with deep crimson central markings. Flower panicles with deep pink flower buds fade as they open to pale-pink and ultimately frothy white wands over a long period from spring to summer
Listed in the RHS Plant Finder
This plant is listed in the RHS Plant Finder book. At present our information about this plant is limited to a list of the nurseries that supply it. In time we will be adding more details including a description, growing information, advice and photographs.
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