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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.
'Karneol' is an upright perennial to 1.2m tall, flowering in late summer and autumn, the flowerheads with spreading deep red ray florets surrounding a brown centre
'Rubinzwerg' is a compact, upright perennial with dark red flowers in summer and autumn
'Waltraut' is an erect perennial with brown-eyed, golden-brown flower-heads to 8cm across, in late summer and autumn
'Fuego' is a compact, bushy, herbaceous perennial, to 50cm tall, with lance-shaped, toothed leaves. From late summer to autumn, masses of flowers are borne on sturdy stems and comprise yellow, orange and red ray florets surrounding a brown central disc
'Coppelia' is a perennial to 90cm tall, flowering from mid-summer to early autumn, with flower heads to 8cm wide, the coppery-orange rays surrounding a brown central disk
'Ranchera' is a compact, bushy, herbaceous perennial, to 50cm tall, with lance-shaped, toothed leaves. From late summer to autumn, produces masses of flowers with slightly ruffled, orange-red petals with a deep red centre, turning yellow as the florets open
‘Königstiger’ is an upright herbaceous perennial up to 1.2m high with green leaves and flowerheads with mid-red ray-florets, yellow at the centre, and brown disc-florets, in late summer; the flowers provide pollen for bees and nectar for bees and other insects
'Short and Sassy' is a compact, clump-forming perennial to 40cm high with lance-shaped leaves. Flowers borne from midsummer into early autumn comprise a dark brown central cone surrounded by orange to golden-yellow rays
'Dunkelpracht' is an upright perennial to 1.2m tall, with dark orange-red ray florets tipped with yellow, and surrounding a brown centre; flowers in late summer and early autumn
'Baudirektor Linne' is a robust, erect, clump-forming perennial to 1.2m, with large lance-shaped leaves and single daisies to 8cm across, with brownish-red rays surrounding the brown disk, from late summer
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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.