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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.
White Chiffon is a vigorous deciduous shrub with dark green, shallowly lobed leaves and pure white flowers to 10cm across from late summer, with five large outer petals surrounding a centre of small, petaloid stamens
'Lenny' is a bushy deciduous shrub with dark green, diamond-shaped simple or lobed leaves and single, pale mauve flowers to 12cm across
'Meehanii' is a large deciduous shrub with ovate to three-lobed leaves margined with creamy-white, and single, mauve flowers with maroon centres from late summer onwards
'Oiseau Bleu' is a medium-sized, upright deciduous shrub with lobed, dark green leaves. Flowers single, violet-blue with a maroon centre, to 8cm in width, in late summer and autumn
Pink Chiffon is a deciduous shrub, to 2m tall, with lobed, green leaves. Pale pink, semi-double flowers, to 8cm across, with darker veins at their centre are borne from mid-summer to autumn
Blue Chiffon is a deciduous shrub with green, lobed leaves. Flowers are pale blue and semi-double with a star-like red-purple stain at the base of the outer petals
'Cicola' is a deciduous shrub to 2.5m tall, with shallowly lobed leaves and white, double flowers 10cm wide, dark red in the centre, opening in late summer and autumn
Lavender Chiffon is a bushy deciduous shrub to 2m tall, with lobed, dark green leaves and double, lilac-pink flowers 10cm across, with darker veins in the centre, opening from late summer to mid autumn
'Woodbridge' is a medium-sized, upright deciduous shrub with dark, lobed leaves. Flowers to 10cm in width, single, deep pink, with dark red centres
'Hamabo' is a medium-sized, deciduous shrub with strongly lobed leaves and blush-pink flowers 12cm in width, with a conspicuous red blotch at the base of each petal
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We're a UK charity established to share the best in gardening. We want to enrich everyone's life through plants, and make the UK a greener and more beautiful place.