Hi Jai,
What I do when there are too many cultivars that match my search is to find the one I'm after in the database separately and open the page, i.e.
If you look at the URL you'll find there is a number in it - in this case 611496 - which is the id of the plant. You can put this number into the search field when you want to attach your photo and only that plant will come up in the results.
