Sunflower 'Kong'

Helianthus annuus

How to grow Sunflower 'Kong'

  • Full Sun

  • High

Position in a full sun location and remember to water often. Keep in mind when planting that Kong is thought of as half hardy, so remember to protect this plant from frosts and low temperatures. Planting Kong in loamy and clay soil with a ph of between 5.7 and 8.1 is ideal for as it does best in weakly acidic soil to weakly alkaline soil.

Growing Kong from seed

Try to aim for a seed spacing of at least 4.68 inches (12.0 cm) and sow at a depth of around 0.49 inches (1.25 cm). Soil temperature should be kept higher than 13°C / 55°F to ensure good germination.

By our calculations, you should look at sowing Kong about 21 days before your last frost date.

Transplanting Kong

As Kong is half hardy, ensure temperatures are mild enough to plant out - wait until after your last frost date to be on the safe side.

Harvesting Kong

Sunflower Kong Etymology

The botanical epithet is from the Latin annuus meaning “annual”.1

Footnotes