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© RHS 2000
Annual/Biennial or Bedding
Columnar/Upright
old H4 (hardy)
Black, Dark Brown and Dark Red in Summer
Green in Spring and Summer
1-1.5 metres
0.1-0.5 metres
1-2 years
sunflower 'Claret'
Asteraceae
Helianthus can be tall, erect annuals, tuberous or rhizomatous perennials, with coarse simple leaves and large daisy-like flower-heads
'Claret' is a robust annual with dark stems bearing single, black-centred, deep red-brown flowers to 15cm across
Suppliers listed in RHS Plant Finder
Grow in moderately fertile, neutral to alkaline, humus-rich, moist but well-drained soil in full sun
Propagate by seed sown in-situ or in a pots or modules in spring
Cottage/Informal Garden, Flower borders and beds, Cut Flowers or Wildflower meadow
Cut back after flowering
Can get slugs and snails
May be affected by powdery mildews and sclerotinia diseases
© The Royal Horticultural Society 2011 / RHS Registered Charity № 222879/SC038262