Ageratum Flower Growing Zones. Department of Agriculture zones 10 and 11 you can enjoy this flower as a perennial. Without full sun plants may also have more issues with foliar diseases such as powdery mildew.
Full Sun Partial Sun. More than 60 cultivars of the blue ageratum flower are available often reaching only 6 to 8 inches 15-20 cm when fully grown. May be air-dried but the flower color often fades.
It is in flower from June to October and the seeds ripen from August to October.
2 15cm 60cm Spread. May be air-dried but the flower color often fades. Ageratum will do well in sunny locations planted in moist but well-drained soil that has been amended with compost or peat moss. It is a great annual for container gardens too.