I'm not sure what has you frustrated either
These are not dated threads as in Daylily Alphabet 2015....show us your "K's". They are simply Daylily Alphabet threads and can be "bumped" back up into discussion whenever someone makes a new post to the thread. This allows for a continuation of the discussion on the topic and also keeps all the information in one thread. Plus, new members have an opportunity to see what was posted previously. Any thread can be moved up by simply making a post to that thread.
I'm surprised Becky that you don't understand the reason for continuation of discussion in a thread...that is exactly how the Daylily of the Day threads work too.
