They grow well in a standard peat moss/sand which can be anything from 50% to 70% peat moss. There's no need to fertilize, as the plant relies on insects for food.
The flowers are redish-purple with darker spots. A rare and vivid colour. It features 2-3 inch long, pendulous flowers on long spikes in late Spring and Summer.
Calendula officinalis (pot marigold, ruddles, common marigold, garden marigold, English marigold, or Scottish marigold) is a plant in the genus Calendula of the family Asteraceae.