The chart below shows when herbs can be harvested from the garden.
Woody herbs like bay and rosemary will survive outside in a sheltered spot through the winter. They are both evergreen herbs and will have leaves which can be harvested all the year round.
Parsley, chives and chervil also grow throughout the year if protected, and produce fresh green leaves which can be cut all year long. Alternatively, these herbs can be grown in pots on the kitchen window sill.
Horseradish is a hardy perennial herb which is hard to get rid of, once it is established in the garden. The roots can be dug all through the year.
Most other herbs produce new shoots in the spring which will be big enough to harvest in the summer months, and harvest will continue until October.