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Helianthus annuus Common sunflower
USA; 50cm - 3,5m
Planting position: Full sun.
Wind-protected planting spot.
Suitable for all growing areas, with additional watering when needed.
Requires regular and thorough watering during dry spells.
Well-draining soil, with added potassium sulphate.
Watch out for fusarium and fungal diseased.
Propagate from spring-sown seed.
This easy-to-grow and well-known plant is popular for its large, yellow circular
summer flowers. Other hybrids are shaded reddish-bronze, maroon, ivory-white
and orange to golden. The oval leaves are large and hairy.
H. debilis (1m) produces yellow to bronze, single summer flowers.
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