I have been using those bog standard white plastic plant labels and writing on them with a Sharpie. Trouble is you have to submerge the writing under the soil otherwise it fades. So seeds I plant at the beginning of the year are anonymous by May-June time as I often forget to sink them, or don't push them in far enough. I've tried one of those clay pencils and it didn't work any better.
So I'm looking for recommendations for labels and pen that last please
Thank you