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Do hollyhocks flower more than once?
Hollyhocks are biennial or short-lived perennials. In the first year they put on root and foliage growth and in the second they flower, set seed and then die. Double hollyhocks are stunning but they don't have the appeal that single varieties have to pollinating bees.
What to do when hollyhocks have finished flowering?
Removing spent hollyhock blooms is pretty simple: just pinch or clip off those that have faded and finished flowering, before the seed pod forms. You can do this throughout the growing season. Pinch off spent blooms and dead leaves regularly to promote more growth and flowers.
Should hollyhocks be cut back?
Prune your hollyhocks in September.
By early September, hollyhocks will turn brown, and cutting them down is a good idea. Cutting back hollyhocks will keep their seeds from spreading across your garden, and help the plant survive through the winter.