Description
The Giant Yellow is an easy and fast growing Sunflower that is a great variety to grow with children. The large bright yellow heads grow on long strong stems which grow up to 2-3m in height. They are also a useful flower to grow in a border, providing both height and colour. The flowers can be also be used as a cut flower.
Giant Yellow Single Sunflower attracts bees and butterflies and is included on the RHS Perfect for Pollinators list.
| When to sow | Indoors February to March, and outdoors April to May. |
| Where to sow | Sunflowers need full sun (6-8 hours of direct sunlight per day - the more the better if you are trying to grow them to their maximum potential) and are best sown direct where they are to flower. |
| For earlier blooms sow indoors in pots, 1.5cm (3/4in) deep and keep at 13 to 18°C (55 to 65°F) until after germination. | |
| Sow outdoors direct, either in pots or in a flower bed, 1.5cm (3/4in) deep and 45cm (18in) apart. | |
| What to do next | When the risk of frost has passed, transplant seedlings sown indoors to final flowering position after hardening off for 7 to 10 days. |
| Protect young plants from slugs with a cloche. | |
| Water the plants regularly and apply a liquid fertiliser when the plants are 60cm (2ft) tall. | |
| As the plant grows provide support, in the form of canes or trellis, if they are in an exposed windy position. | |
| Flowering period | July to September |
| Companion planting | Good companion plant for peppers, cucumbers and tomatoes. |
| Uses | Useful in the border or as a cut flower. Attracts Bees and Butterflies. |
| Height | 2.5m (8ft) |
| Spread | 45cm (18in) |
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