Herb Gardens - How do you know when they are ready?

I assume the little herb plants you buy at the garden centers for planting are not mature enough to use. Well, I need to know how you can tell when they are and generally from the time you plant them, how long will it take them to get there. Thanks in advance.

Answers:
Pinching off most herbs does not hurt them, in fact it makes them bushier and healthier. You can start using them within the first month. Sometimes I think basil can grow faster than I can pinch it off. The more you use the faster it grows.

Other answers:
Most herbs you wait until they are bushy and taking some of the leaves won't kill them, but before they go to seed or flower.

You could use them right away, depending on the plant, but then you wouldn't have any for next week...

With Basil, peppermint, and oregano, for instance, you can nip off the ends off the longer stalks and this will encourage the plant to be low and bushy.
Most herbs you wait until they are bushy and taking some of the leaves won't kill them, but before they go to seed or flower.

You could use them right away, depending on the plant, but then you wouldn't have any for next week...

With Basil, peppermint, and oregano, for instance, you can nip off the ends off the longer stalks and this will encourage the plant to be low and bushy.
Herbs are always ready.
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