Posted: 29/09/2012 at 16:58
I tend to agree with Kate. The difference isn't in the variety, but the way they're grown. Supermarket herbs are forced, in optimal conditions, so grow larger much more quickly than garden centre herbs. Garden centre herbs, being grown more slowly, are sturdier and stronger plants which can be planted outdoors. If you try and break up supermarket herbs and plant them out, you will find that they curl up and die because they are "soft" and have poor roots.