Iris is toxic to cattle but daylilies are not toxic.
Rabbits and deer eat daylilies. Even cats will chew on daylilies.
There are daylilies in most temperate locations.
Yes. Daylilies can be grown in pots.
Daylilies are very hardy. The pests that bother daylilies are rust, thrips, spider mites, snails, and crown rot.
Most likely it is because your daylilies have too little or too much water. If you are concerned by the soil, have it tested and ask the expert what amendments you need for your daylilies. Most daylilies are very hardy.
Yes, it is very similar to legume hay, AND BE CAREFUL ABOUT BLISTER BEETLES!! (toxic type of beetles).
Daylilies are not poisonous. In fact, all parts of the daylily are edible. The Chinese use the buds in stirfry. And you may have to spray the daylilies with repellant to keep deer and rabbits from chewing on them.
No as some moulds can be toxic to goats.
No you do not have to mulch your daylilies. Most gardeners do to cut down on weeding and watering.
no
Daylilies have a herbaceous stem. The old stems die and gardeners should compost them.