Very leggy Melianthus Major
I have a Melianthus growing in a pot. This year it has produced flower plumes and new growth on the upper part of the plant but it has become very leggy and sprawling. What can I do to tidy it up - can it be pruned and should I deadhead the flowers when they die off? It is about 6 ft high with 5 branches. Thanks for any help or advice.