It is very helpful if you label your trade items, plants, seeds & bulbs. With just the name, growing instructions and pictures can be found on-line.
Suggestions for labeling sticks are popsicle sticks, cut PVC mini-blinds and plastic knives.
Used PVC mini-blinds and a #2 pencil will remain readable for a year or more. Ink and markers tend to wash off.
Also, be prepared with labeling material so that you can label any plants items that are not already labeled. Chances are good that you will not remember what the name is when you get home.