I have tried SO many types of markers and NONE of them stay put or stay labeled.
THIS year I bought a set of metal stamps - like tool&dye stamps - and will buy some copper flashing from Home Depot to stamp the names on. And whatever perennials I can tie them on to, I will tie them on. The others, I'll put a rock on top of.
Tired of losing track so much! I can't do anything about the ones who com ein nameless but it frustrates me terribly to label the ones I do know and have the labels disappear.
