Surprisingly, both cilantro and basil freeze very well. After cutting the leaves, preferably in the early morning while they are freshest, we mix them with a small amount of olive oil... just enough to coat the leaves. They are then packed into freezer bags and frozen for later use. The olive oil makes it really easy to separate the frozen leaves and also adds an extra flavor to the mix.
Do you know that you can start some herbs inside by simply placing a cutting in a container of water.it takes a few weeks & you'll see its roots. I've started rosemary, oregano, marjoram, basil & mint too, i've created several new plants this way.