Benign neglect works! I don't like them much either! Had one for several years watered when I remembered it, but otherwise left it alone. It thrived! I pruned it occasionally.
Words you don’t often see now.
Burnham: Is the Media Tempting Fate by Jumping the Gun?
Royal Dress Code in Hot Weather



, and always just leave them on the windowsills and water them when needed till the flowers shrivel and die, usually around April. They’re pretty good value for a couple of quid!