Marigold Zenith Marigold Zenith blooms from July until October, it produces large bright flowers in shades of red, yellow, orange and bicolour. Much loved by our customers, Tagetes patula x erecta outperforms all other marigolds and has an impressive showy appearance that is unmissable. Marigold Zenith enjoys growing in a sunny spot and will spread and grow in height to a fantastic 35cm. It has a vigorous growing habit along with superb weather resistance, if you want to make a show stopping summer display this year - Marigold Zenith mixed is the one for you!