Lilies: Need some forward thinkers...., 1 by Sunshines2day

Sunshines2day wrote:
...been looking (for years) at which plant markers would actually hold up nearly forever without any maintenance besides wiping it off. Want ones that will hold up to all the elements and are economical. Thought of this (about a dollar a piece for me to make) and wondered if anyone had any pros or cons that I haven't yet thought of.

This pic is just the idea....I'm guessing that the color will fade off and soil/grime will pack the engraving to create an almost opposite effect which should be just as durable and more to my liking.

What are you thoughts? Do you think it will last 25 years in the environment and still be readable? Would certain colors attract good bugs vs bad bugs? Any ideas would be appreciated.