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botanical name:
Helianthus annuus 'Bicentenary'
Helianthus annuus 'Bicentenary' © Deeproot Plant Base
common name:  Sunflower
family:  Asteraceae
characteristics: annual/biennial
height: 2.00m
width: 0.60m
growth rate: fast
growth habit: erect
leaf colour: grey-green
flower colour: golden
stem/bark: green
main season: Summer
edible symbol edible
aspect: full sun
conditions: dry soil, moist soil
preferred soil pH: neutral-alkaline
minimum temp: 0°C
USDA zone: 7 to 10
description:
Soft, silvery grey-green foliage. Rich golden yellow and bronze bicoloured flowers about 15cm across, on branching stems in summer.

cultivation:
Fertile neutral to slightly alkaline, moist, well-drained soil. Full sun.

propagation:
From seed.

usage:
Good for use at the back of borders and also suitable for cutting.

other notes:
Named to celibrate the bicentenary of the Royal Horticultural Society in 2004. Raised by Thompson & Morgan.
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