Sometimes they do. Insects and fungi go after them more often. When I was a kid growing up in OK, I grew some marijuana when it was still very illegal. Walked my ass an hour each way (uphill too) to the spot by a creek with 8-10 foot cliffs on both sides, in straight sand, with miracle grow in a bag and a plastic coffee can left by them. Grew some tall ass, big and healtht plants. I ruined them in the drying. Later Some buddies and I grew some plants in a sparsely wooded area. Filtered, diffuse sunlight is the best description of the lighting. No direct light except for an occasional direct hit from a beam through the trees. We topped them and had some fantastic looking plants budding out. Asshole(s) snagged them late July. This plant is resilient. It will try. Don't worry if you don't grow "the worlds best fucking weed." Just get your feet wet. Just don't get caught. A long way off in the future, but If you Cant grow indoors, where are you going to dry this shit out?