Thanks Richard for the tip, it can be a start-point.

You should try to contact Dr. WJ Griffin. He was my supervisor at the Department of Pharmacy, University of Queensland, Brisbane Australia 1976-7982. He retired but still live in Brisbane. We have done cultivation Studies under glasshouse conditions and field conditions and seasonal variation. see Luanratana O, Griffin WJ Cultivation of a Duboisia hybrid Part A Part B J Nat Prod43(5):546-551,552-558.

Dear Omboon,

Thank you for your kind advice. I will need an established enterprise which is cultivating duboisia for medicinal purposes or a trader dealing with the plant. However, I think the solution definitely should be located at Australia.

Kindest regards

Dr. Thomas Kallimopoulos