Thyme and Chives are perennial (Sorry OWG), Parsley is bi-annual and Basil and Dill are annual. You need to keep cutting the Chives so that they produce nice succulent leaves and Thyme needs a good haircut or it will go woody and straggley. Clumps of Chives need to be split about every 4 years.

Hope this helps

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Gardening requires a lot of water - most of it in the form of perspiration. Lou Erickson, critic and poet