If I'm too old to defend my food, either all the raiders have starved, or they've started farming.
A nice food forest would probably be the best option. Camouflaged to most laypeople who can't identify plants. Only collectable some parts of the year. Attracts wildlife.
People in large cities have different problem sets than people in remote areas. I don't lock my doors, either. People don't wander by. I'm bordered by bluffs and wilderness.
Food stores can be buried etc. I have buried things on my property in the past for a couple of years, came out unchanged.