I am not sure if the rating should even be based on a one time transaction, or if the rating is supposed to be based on single transaction.
I guess it is a fact that you are not overly pleased with the condition the plants arrived in. The only reason for having a rating system is to provide honest feedback, otherwise the rating system is worthless.
I would contact the vendor, send a photo, and see what they have to say in defense of the plants arriving in that condition. If you get satisfaction give a positive rating and if not give an honest rating.
