They are perennials. They are very hardy plants!
Most herb plants are grown as annual plants. However the mint family of herbs are considered perennials and are very hardy.
Yes but they are not hardy perennials and in the UK where we have cold winters dahlias need to be lifted, allowed to dry and stored in cool frost free conditions until spring when they can be replanted.
There are dozens of marigolds, and some are annuals while some are perennials.
Andrew Gough has written: 'The use of hardy herbaceous perennials in urban design'
There are many varieties of daisies. Some are annuals and others are perennials.
Geraniums are hardy perennials so are not too fussy except for extremes. If you mean Zonal Pelargoniums they need frost protection.
If planted early enough in the season for the roots to grow, chrysanthemums are perennials.
perennials
Hops are perennials.
Both annuals and evergreen perennials. For example the Balsamina and the Gladulifera are annual and the New Guinea group perennials
If the plant is an herb than it is a perennial. Some only survive for two years but are still called this. Other woody plants such as bushes and trees live for years.