If you select the photo from those provided for the cultivar, then scroll down below all photos, there is a space to provide comments regarding a specific photo.
I agree, it would be a useful option to have a hybridizer field for each cultivar. Probably for most entries it would be blank but for a lot of plants, it would be a welcome addition. For some plants, an alternate field might be the company that introduced the plant. Many annuals, coleus and heucheras for example would fit into this category: Ball Horticultural, Proven Winners, Terra Nova all introduce many cultivars without mention of the hybridizer.
