Beginner Gardening: Challenged Petunias - HELP!, 1 by ez2cwhy

ez2cwhy wrote:
We purchased this wave petunia about a month ago and it was beautiful for many weeks. However, as the weather has warmed, the plant doesn't look nearly as good anymore. Our understanding was that wave petunias do not need to be pruned back or have their dead buds pulled. With that being said, something is definitely amiss. We water every 2 days, which seems right based on the wilty look of the plant if we miss a day. Also, we water the ones hanging from the front porch on the same cadence and they look great (also wave petunias). The only difference is that this petunia sees sunlight the entire day, whereas the ones of the front porch only see partial light through the day. We fertilized all of the plants about 2 weeks ago with the Miracle-Gro plant stakes. Should we try watering this one more?

What are we missing? Thanks in advance!