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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.
'Dancing Flame' is a herbaceous perennial with five-lobed leaves and brilliant orange, bowl-shaped flowers with flame-like, narrow, central petals on upright stems from mid-spring to early summer
'Superbus' is a clump-forming herbaceous perennial to 60cm, with deeply divided basal leaves and long stems bearing globose, lemon-yellow flowers 5cm across
T. europaeus is a variable herbaceous perennial forming compact clumps up to 80cm tall. Its leaves are up to 12cm wide and deeply divided into 3-5 lobes; each wedge-shaped segment is often further lobed and toothed. Clear lemon-yellow, spherical flowers 3-5cm in diameter are borne from late spring into early summer
'Alabaster' is a clump-forming, herbaceous perennial to 60cm, with deeply divided basal leaves and long stems bearing very pale yellow, bowl-shaped flowers 5cm across in md- to late spring
T. chinensis is a clump-forming perennial, to 90cm tall, with dark green leaves divided into five lobes each of which is further lobed and toothed. In spring and early summer, erect stems bear solitary, shallowly bowl-shaped yellow flowers with spiky, erect orange-yellow inner petals
T. pumilus is a compact perennial to 25cm in height, forming a clump of glossy foliage, with bowl-shaped yellow flowers 4cm across, usually flushed red on the outside, in late spring and early summer
'Orange Princess' is an upright herbaceous perennial to 90cm, with dark green, deeply divided and toothed leaves and solitary, long-stalked, globose orange-yellow flowers 6-7cm in width
'Lemon Queen' is a clump-forming, herbaceous perennial to 60cm, with deeply divided basal leaves and long stems bearing lemon yellow, bowl-shaped flowers 7cm across in late spring and early summer
T. asiaticus is a clump-forming perennial, to 45cm high, with bronze-green foliage divided into three to five-toothed lobes and solitary bright orange flowers, to 4.5cm in diameter, borne in late spring and early 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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