Knowing how to store coriander after it is harvested is not as hard as some people think. You just need to observe the following procedures.
How to store coriander after it is harvested (method 1): wrap in towels
One of the best ways to keep the flavor of the coriander intact is to envelop them in paper towels. What you have to do is to take the herbs you need. Next lay them on the towels, and keep it away from the sun. You should instead put the herbs in a drawer or cabinet. This type of location is necessary to allow the leaves to dry out.
How to store coriander after it is harvested (method 2): put in glass
Another way to store this herb is to fill a glass or bottle with water, and set the herbs there. If you are going to use this method it will be better if you change the water everyday, especially if they show signs of changing colors. The same can be said for other herbs stored in this manner.
How to store coriander after it is harvested (method 3): store in the fridge
This is another option that many cooks utilize. In this instance, you should slice the leaves and put them inside a container that is suited for the fridge. If you want, you can chop up the leaves into several smaller pieces, and add a little bit of butter into the mix.
These methods for how to store coriander after it is harvested are best suited for the leaves. If you are going to use the seeds, it is much better if you use them as soon as they are picked, so that the freshness remains.
Incidentally, these same steps can be used when harvesting and storing cilantro, as its properties have many similarities with coriander. Like the cilantro, using any of the above mentioned processes will help you get the most out of its flavor for about a week. There are some disagreements as to whether the dry or cool method is better at preserving the taste, but most prefer putting the herbs in the fridge.
Going through books about gardening and cooking, you will likely find several techniques on how to store coriander after it is harvested, but those above will almost always be the ones that will be the top choices. For the best ways of preserving the flavor, you should stick to the three.