many of mine didnt. i suspect it was the lack of sunshine. i have loads of leaf due to the rain. so hopefully next year will be drier and sunnier.

Same here for me, although a lot of the traditional later summer plants haven't flowered well, if at all.

That said I have some Crocosmia in the same spot that have only just flowered this week.

When you consider that they originate in South Africa it's no wonder they sulked this summer!