Garden Cosmos 'Sweet sixteen'

Try to plant in a location that enjoys full sun and remember to water moderately. Sweet sixteen is generally regarded as a half hardy plant, so remember to protect this plant from frosts and low temperatures. Sweet sixteen needs a soil ph of 6.6 to 7.8 (weakly acidic soil - weakly alkaline soil).

Try to aim for a seed spacing of at least 0.98 inches (2.5 cm) and sow at a depth of around 0.25 inches (0.64 cm). For optimal germination, soil temperature should be a minimum of 20°C / 68°F.

Sweet sixteen is half hardy, so ensure you wait until all danger of frost has passed in your area before considering planting outside.

The botanical epithet is from the Latin bipinnatus meaning “staunch” or “like two small wings”.¹

¹ Latin Dictionary