Garden Cosmos 'Peppermint Rock'

Try to plant in a location that enjoys full sun and remember to water moderately. Peppermint Rock is generally regarded as a tender plant, so remember to wait until your soil is warm and the night time temperature is well above freezing before moving outside. Peppermint Rock 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.

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

Peppermint Rock is tender, 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