CALENDULA or POT MARIGOLD A Southern European Plant That Is Popular in Garden and Greenhouse (Calen’dula). Showy annual plants from southern Europe belonging to the Daisy family, Compositive. They have simple alternate leaves and branching stems 1 1/2-2 1/2 ft. high, bearing large heads of yellow, yellowish or orange-colored flowers which are in full beauty during the summer. Calendula is […]