Just read this
Can foreigners grow cannabis at home in Thailand?
No – not unless they hold Thai citizenship.
To successfully register to grow cannabis at home via the ‘Plook Gan’ application, budding bud farmers must enter their Thai citizenship number.
A certain news paper contacted the Ministry of Public Health through their ‘Hemp Hotline’ to clarify the facts.
The ministry said, “foreigners cannot grow cannabis at home in Thailand without Thai citizenship.”