It is a bit challenging that our favorite single oils, blends, and products are not always available when we choose to order them. However, it is due to the fact that we have to wait for the plants to mature to produce the essential oil. If the growing conditions are not favorable for the particular plant, there will be a shortage of the oil. If that oil is in a number of blends, then ALL of the blends will be in short supply as well.
When synthetic essential oils are used or synthetic ingredients are added to an essential oil, they can quickly (and inexpensively) be produced in the laboratory, avoiding the shortages that we experience.