Flowers
Helianthus 'Red Sun' (Sunflower)
Sunflowers
Tall annual with striking, bronze-red flowers. Excellent for adding height to the back of borders, as a screen or for cut flowers. Flowers can vary from 10-25cm in diameter. If not planning to harvest the seeds, leave the spent flowers on the plant so that birds can feed on the exposed seed head in autumn.
- Plant type
- Hardy Annual
- Position
- Full sun
- Height
- 1.5m
- Spread
- 40cm
Growing calendar
JFMAMJJASOND
Sow indoors
Sow outdoors
Flowering
Sowing & growing
Sow under cover from March to April in individual pots and place in cold greenhouse or coldframe until risk of frost has passed alternatively sow outside where they are to grow in April to June. Sow 15mm deep spacing the plants 30-40 cm apart. Harden off seedlings grown under cover before planting them outside.
Aftercare
Water deeply once or twice a week, stems may need staking.
Gallery
Ref. SES011