One trick gardeners use is to just bury the tag, often the one that came from the store. maybe a eighth of an inch or just under some wood mulch- keeps it from uv and let’s you check if you’re desperate.
You could have a method for locating like 4 inches from the plant stalk to the north.
Awesome idea and inspiration. I’ve been storing my old seed packets in a Rolodex with handwritten notes and have been thinking of ways to make it more scalable.<p>One question for the 3D printer crowd: PLA will probably fade and crack quickly-ish with sun exposure in a garden, any material selection ideas to extend the life without injecting a plastic into the ground next to veggies?