I felt that Tinkers has a simple search engine for the cultivars. I would begin typing in "Crimson" and every flower with crimson at the beginning of their name would show up in a drop down box. Then as I continued typing "Pri..." (for Pirate) the drop down box would shrink. I really liked it for names I wasn't quite sure of the spelling of, or for ones I could remember the beginning, but not the last part of the name. It was just so simple & quick to use. ~Jan