Evolis Ingredients

One thing we have never discussed much here (well, not recently) are the Evolis ingredients that make up the botanical side of things and make the whole process work.
Does anyone have any idea where they are grown for instance?
How susceptible are they to vagaries of weather and are they grown local to the manufacturing plant, wherever that is?
My concern is that if they need a lot of product in a hurry for a rapidly expanding market it may not be possible until the plants have grown to a harvest-able size.
Can they grow these crops multiple times in a season and is the supply in any way threatened by consortiums, regulations, import tariffs if grown elsewhere.
Hopefully the prolific growth of the last couple of years in all manner of plant life, (possibly due to increased CO2) extrapolates into increased production of the ingredients for Evolis.