Sunflower 'California Greystripe'

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

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 California Greystripe about 21 days before your last frost date.

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

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

¹ Latin Dictionary