Hi Tijori,
Do you know the names of the two daylily cultivars?
Did the two daylilies have flowers or scapes at the time you bought them into the house?
Were the two cats related in any way?
I'm not sure that a genetic component is involved in the cats (although that is possible)- a genetic (or environmental) component may be involved in the daylilies and that is more likely. That is why the cultivar names are important as is detailed information about the daylily plants.
