Calendula 'Radio'

A full sun position will ensure your plant thrives and remember to water moderately. Keep in mind when planting that Radio is thought of as half hardy, so remember to protect this plant from frosts and low temperatures. Ensure your soil is loamy and has a ph of between 6.1 and 7.8 as Calendula is a weakly acidic soil to weakly alkaline soil loving plant.

Try to aim for a seed spacing of at least 7.8 inches (20.0 cm) and sow at a depth of around 0.2 inches (0.5 cm). Soil temperature should be kept higher than 10°C / 50°F to ensure good germination.

By our calculations, you should look at sowing Radio about 35 days before your last frost date.

Ensure that temperatures are mild and all chance of frost has passed before planting out, as Radio is a half hardy plant.