I don't know if Chamomile and Lady bugs have an affliction for each other, if my chamomile has a ton of others bugs in it the lady bugs like and that I can't see, or if I'm just lucky but on the one large 3'+ tall clump (1'x2') of chamomile I have amongst our other flowers etc I can easily count 25 of them at a quick glance. The Chamomile is quite healthy FWIW and loaded with bright yellow flowers. They've not migrated to the bachelor buttons, roses or other nearby herbs & flowers, just the Chamomile.
Grandpa, zone 7 (Albuquerque)