This may not be best for small seed pots, but I use a marker for my larger pots- I write the information directly on the plastic pot, and never have to worry about losing labels. http://www.durablesupply.com/madema.html I use the white markers on the black pots. The paint is very sturdy, and lasts- to remove it from the pots I use a bit of gasoline on a cotton sponge. Susan