I am finding Pink Pearl to be a bit fussy as well. Try making your potting mix faster draining or raising the plant up onto a small hill so it cant sit in the water at all. If you are using pots and having rot issues, you can also try to move to taller pots.
We have had rain almost every day now for more than a week and my plants have stayed continually wet. Most are taking it OK, but I've had to rescue a few. That's where raising in pots comes in handy. The few fussy ones I have get moved to the porch (sheltered from rain) until they dry out.
