Here in the US some people do "guerilla grows" meaning they go out into the woods and just plant a few cannabis plants.

Lots of time animals just end up eating them or they get washed away in floods. But I hope the best for yours. Maybe you will get lucky.

There's a good post talking about growing in secret outside.

https://dutch-passion.blog/cannabis-guerrilla-growing-10-step-strategic-plan/