Do this by cutting a number of the stems and removing them from the plant. You should also remove any leaves that are attached to the stems or have broken off in the process. You will have to replace these leaves after they have fully matured. Next, the harvesting of Chamomile will start and the blooms will open. You should expect to see some buds start to open and begin to develop before the blossoms fully open up. You will also notice a white flower that will be quite small when first opened, but will continue to get bigger as the bloom period progresses. Harvesting the flowers at this point will help you get the most benefit from the flower. It is important that you allow the flower to fully open up before you try to prune the plants. Otherwise, you could damage your plants while you are harvesting the flowers.