Sunflower 'girasol'

Helianthus annuus

How to grow Sunflower 'girasol'

  • Full Sun

  • High

Try to plant in a location that enjoys full sun and remember to water often. Keep in mind when planting that girasol is thought of as half hardy, so it will require protection in frosts and low temperatures. Planting girasol 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 girasol from seed

Sow at a depth of approx. 0.49 inches (1.25 cm) and aim for a distance of at least 4.68 inches (12.0 cm) between Sunflower plants. Soil temperature should be kept higher than 13°C / 55°F to ensure good germination.

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

Transplanting girasol

As girasol 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 girasol

Sunflower girasol Etymology

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

Footnotes