Castle is suitable for landscaping, pot containers and gardens. Castle is semi-dwarf in height 40-50cm / 16-20cm inches, vigorous and has a self-branching habit. The long lasting flowers withstand summer heat and drought.

Castle series should be grown quite dry, but avoid excessive dry conditions in the seedling stage as stress-related premature flowering may result. Cycocel and Bonzi have shown effectiveness on Castle series.