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Sunflowers are among the easiest and most rewarding annuals to grow. They're also some of the tallest, with many varieties producing huge, saucer-shaped yellow flowers that tower over other plants in the border.
Helianthus annuus 'Russian Giant' produces large, bright yellow flowers on very tall stems. It's ideal for growing at the back of herbaceous borders, and makes a dramatic cut flower.
For best results, sow Helianthus annuus 'Russian Giant' seed in individual 10cm pots of moist seed compost in April to May, cover with cling film and place on a sunny windowsill or greenhouse bench. Remove the cling film once the seeds have germinated, and water plants regularly, allowing the water to drain. Pot on into larger pots with multipurpose compost, before eventually planting outside once all risk of frost has passed.
Sunflowers are hungry plants - enrich the soil before planting out with plenty of well-rotted manure or garden compost, and water plants regularly. You may need to stake plants in exposed gardens.
Cultivar: Russian Giant
Plant type: Hardy annual
Flower colour: Yellow
Foliage colour: Mid-green
Sun exposure: Full sun
Soil: Well-drained/light, Clay/heavy
Skill level: Beginner
Time to plant seeds: March to May
Flowering period: July to September
My tallest topped out at 11 feet 4 inches. The head was huge and the weight was unbelievable. Also each leaf was Atleast a foot in width. Beautiful and tremendous.
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