Growing herbs, especially from seed, requires months of work before seeing results. By this time, you just want to let your plants grow, but then all at once they’ve gone to seed. Pruning and harvesting encourages fuller growth and a bigger yield.
Two important rules apply to harvesting most herbs. One: never pick more than one-third of a plant’s leaves at once. Two: let the plant recover before harvesting again. Beyond that, everyone has their own method, from selectively picking single leaves all over the plant to snapping off entire stems.