Hi Again, They use the P touch labeler with TZ labels don't get the knock offs they fade. Some say have used for 20 yrs and are still good? The tape is on the pricey side. They also like the Kincaid Stainless Steel markers. Many say the zinc do not last and need to be replaced in 3-4 yrs.
Another likes the Avery labels 5520 for outside with a laser printer if you have.
Another uses metal strapping which she cuts and paints with krylon to prevent rust (much cheaper free! if you find)
I have decided to try the labels since I have a laser printer and a daylily program that does labels
you might want to check out ( plantstep.com) reasonable (maybe a present? lol) It certainly is better than my little spreadsheets I had made for myself and does other plants as well and hybridizing. I will be able to do my whole garden. Also going to do a mix of strapping (free) and the kincaid markers. Probably will eventually do all Kincaid unless I see no difference in a few years.
many use blinds cut up also for seedlings so not sure if they can handle full time use.
Hope you find this useful.