Hi Jack Carter,
If I may be so bold as to make a suggestion even though you asked Linda. We mark our blinds with A.M. Leonard Nursery marking pens, We mark both the bottom and the top of the blind. The top may fade over time but the bottom is buried in the soil and we have found they remain easy to read, and it is easy to remark the top when it fades. We also chart the location of each plant. One year our neighbor had ducks and they preceded to pull out our markers. Moles and other critters can disturb your tags.
Leonard puts out a catalog and I imagine they have a web site so you may want to check it out.
Good luck,
Vicki