A Brother PTouch label maker will print to any color adhesive backed tapes they offer. They come in different widths and even have a heavy duty adhesive on some for outdoor use. I have some plant tags made from these, and I stick the adhesive sides together to mark my Asian pear trees. They have been attached to the trees limbs for 3 years years now and are still readable. There are metal tags you can buy that stick into the ground, and these just need to get a label stuck to each. Additionally, if you want height, you can use some of the green, plastic coated tomato poles you see selling at Home Depot for about 2 bucks each. Then apply these labels as 'flags'.

Here is a link that might be useful: P Touch labelers

Some years ago, I had a 'potty' friend who made up some terracotta labels for me, and fired them. I chose to write the names of the plants with a permanent pen, but these could have been etched into the clay just as well. They were shaped like a lollipop on a stick. If you went to a craft store, you could buy the clay. It's just like working with dough, really! Take a lump, roll it out to shape and a suitable thickness. The shop people would, I'm sure, provide the name of some place you could take your creations to be fired in a kiln.

Another alternative is to contact a Nursery Supplies place and get plastic markers.

Here is a link that might be useful: plant labels etc

I see you live somewhere it freezes. Me too. I end up having to re-seat or re-do labels after the winter. All but the sternest stuff (like metal name tags) get nuked eventually from the freezing in the winter and the sun in the summer. Most plastic markers only make 1-2 years for me with any reliability. Terracotta and ceramic will be destroyed by the freezing parts of the year, although they may last a year or three longer than plastic. I don't know how the labels from label makers will fare in successive seasons...I haven't tried them. I suspect not much better than plastic markers. Irregardless of the type of marker used, many will be worked loose in freezing, heaving, ice, and snow and you will have to reseat them come spring.

I would go for metal tags or inexpensive plastic markers that are easy and cheap to replace.

FataMorgana

This is probably a huge amount of work for 60 herbs, especially since you want lots of info on them but you could create a stencil for each herb and spray either acrylic or oil based paint onto a piece of slate or bluestone. The paint should last several years and the stone will resist the freeze / thaws. A year or so ago at a crafts fair I picked up a couple of herb markers that had the names etched into a triangular piece of slate and they've held up very well. If you're handy, you could also burn the info into some cedar or redwood stakes.

For many of my annuals, I just go with copper tags, use the professional Sharpie markers and then give them a quick coat of spar varnish to seal the ink and it protects for at least a couple of seasons.