I have made a few guerilla gardens in various states. In the process of doing that I have developed a few rules to follow. Never in national or state parks. Never in any environmentally sensitive areas. Never set foot on private property without permission. No human food near roadsides for safety reasons & to avoid someone consuming toxic food. Nothing that is likely to become invasive. A flight instructor once told me "never do anything that you couldn't explain to the complete satisfaction of the head of the FAA". Same principle applies here.
While it's not quite guerilla gardening I have long stated "less lawn more food". It just makes sense.
Over the years, in various locations, I have probably converted more than an acre of lawn into food production.
make some seed balls!!!