Garden Cosmos 'Sea Shell'

A full sun position will ensure your plant thrives and remember to water moderately. Sea Shell is generally regarded as a half hardy plant, so it will need protecting in periods of cold weather. Sea Shell needs a soil ph of 6.0 to 8.5 (weakly acidic soil - weakly alkaline soil).

Aim to sow 0.0 inches (0.0 cm) deep and try to ensure a gap of at least 5.85 inches (15.0 cm). For optimal germination, soil temperature should be a minimum of 20°C / 68°F.

By our calculations, you should look at sowing Sea Shell about 28 days before your last frost date.

Sea Shell 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