A common mistake with Herb Growing is not cutting back enough
What makes an herb grow fast and neatly, is pruning. Of course pruning an herb means that you are actually harvesting the great tasting leaves and stems. If you do not prune, the plant only grows taller on a few stems. The leaves age, dry and fall off. This results in long stems with no leaves. You are also allowing the herb plant to start and finish its life cycle. By harvesting regularly, you are keeping the herb in its growth stage for as long as possible. This promotes stem and leaves, keeps flowers from forming and keeps the herb producing for a longer period of herb plants look better, and are healthier, if pruned back on a regular schedule.