As i approach this notion as a remote possibility in my future I've given it some thoughts. My approach will be making the grounds and access to stuff a difficult maze of sorts.
You can do small trees that make vehicle passage impossible or so difficult it forces alternative routing. Multiple privacy fences as walls to force left and right turns. Layered fortress design, but with green lean.
Gates, lots of gates, big and small will add time to a would be snatcher.
I dont know if ur greenhousing it or naked out in the yard, nor do i know how big a space ur talking about...i have 40acres so there's no way i can secure a large grow unless i go greenhouse...which...idk, maybe if i hit the lottery, but for now all im gonna do is purple paint on fenceposts.
Texas and other states use purple paint to warn hunters. means don't even fkn think about going in there to hunt or even go get ur wounded deer without contacting owner.