Given how juicy and sweet wolfberries are it would probably be impossible to have a pesticide free farm There is little hard information on this topic though One development I learned recently is that Chinese wolfberry farmers if so motivated can contract with US approved organic certifiers who must visit the farm in China to perform their qualification tests This is expensive and has been discouraging I have a bottle of the Young Living wolfberry juice called NingxiaRed It has a label stating Certified Organic On another hand however China issues its Green Certificate to some wolfberry farmers in Ningxia a certification that is likely as best as possible assuring pesticide practices have been reasonable and minimal as possible My guess is that is the best one can do given the sweetness of this fruit on the vine attracts pollinators and pests of all kinds Serious wolfberry product marketers in the US can have their products tested for pesticide levels I have seen the lab results from one in Seattle that shows negligible levels in their dried berries and pulp or juice powders I have not seen these results on the various wolfberry juice products on the US market