Petals fell off my Peony plants
Petals fell off my Peony plants after two weeks. Why? What do I need to do? Watered every night. Ants are on plants.
Here is an article on peony growing: https://www.gardeningknowhow.com/ornamental/flowers/peony/peony-care.htm
If you mean the petals fell off after 2 weeks of blooming, that's about as long as a peony can be expected to flower. If you mean the buds fell off, that could have several causes. Read more here: https://www.gardeningknowhow.com/ornamental/flowers/peony/why-your-peony-buds-but-never-flowers.htm
One other thing - daily watering may be too much.