I have grown about 250 different cultivars. Of course that includes some duplicates: quite a few are the same one sold under more than one name. Now that I've been in this for a while I only order ones that are new to me. Occasionally substitutions remain unknowns. Just in case, I keep photos of my unknowns, hoping that someday, I will be able to ID them. A great example is H. germa. Ireceived a unknown bulb as a substitution for Lemon Sorbet. When the bulb bloomed, the flower form was not right for Lemon Sorbet, but I didn't have a clue what it could be. 3 years later, I compared my photo to a photo of H. germa, and sure enough I had a positive ID. That was real score, since H. germa is rarely seen for sale. Its blooms every year in my garden.