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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.
'Escarboucle' is an aquatic perennial with round, floating leaves 20-25cm in width, and fragrant, cupped orange-red flowers to 20cm across, with orange stamens
'Orange Glory' is a robust perennial to 1.5m in height, with light green foliage and terminal umbels of red-tipped orange-brown flowers, the inner segments deep yellow, tipped with orange-brown
'Wessex Tang' is a half-hardy perennial to 70cm in height, with lemon-yellow flowers 8cm across, lightly tinged with orange, the disk orange-yellow
Simply the Best is a bushy shrub to 1.2m tall with glossy, green leaves. Abundant, apricot-orange, fragrant flowers, to 10cm across, that lighten with age are borne in summer and autumn
'Jomanda' grows to about 1m, with small, rounded light orange-red flowerheads in late summer and autumn
'Daybreak Garden Sun' is a spreading plant to 20cm, with narrow dark green leaves, white-hairy beneath, and orange-yellow flowers 8cm across, with a dark zone near the centre
'Orange Princess' is a perennial bulb with light green, lance-shaped foliage. The fully double flowers are orange with some yellow shading on the inner petals, and red and green feathering on the outer petals. They grow to about 30cm and open in late spring
'Yellow Jewel' is a dwarf perennial bulb, to 15cm in height, with grey-green leaves. Flowers are yellow, tinged with burnt orange, appearing in mid spring
'Irène Watts' is a bushy, deciduous shrub, to 80cm tall, with dark green leaves and, from summer into autumn, fragrant, double, pale salmon-pink flowers
T. rotundifolia is a large, branching annual to 2m, with large, broadly ovate leaves and vivid orange, daisy-like flowers 8cm across
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