I guess you don't have to be there if you mail them out, but man if you were for some reason wanting to spread an invasive species.... you could just plant the seeds yourself....
You would also be able to target what you might want to happen and where.
Random individuals would seem sort of silly to target unless it spread dramatically or was something else.
Just doesn't make a lot of sense as a sort of intentional invasive species thing.
The receiver will just throw the seeds in the garbage, and depending on the hardiness of the seeds, that is as good as planting them in the garbage dump.
When I visited my local garbage dump with school I was impressed with the number of pumpkin plants growing out of the piles of garbage. I wonder why pumpkins grow so well there.
You would also be able to target what you might want to happen and where.
Random individuals would seem sort of silly to target unless it spread dramatically or was something else.
Just doesn't make a lot of sense as a sort of intentional invasive species thing.