Calendula 'Red Heart'

Red Heart likes a position of full sun and remember to water moderately. Keep in mind when planting that Red Heart is thought of as tender, so remember to wait until your soil is warm and the night time temperature is well above freezing before moving outside. Planting Red Heart in loamy soil with a ph of between 6.1 and 7.8 is ideal for as it does best in weakly acidic soil to weakly alkaline soil.

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 Red Heart about 35 days before your last frost date.

As Red Heart is tender, ensure temperatures are mild enough to plant out - wait until after your last frost date to be on the safe side.