Why are some of my Gerber Daisy's wilting?

by J.h.wallace
I live in SE North Carolina, one mile from the ocean, so we have hot, humid weather.
My flower bed got tilled up and lots of new soil and mulch last year. This year I put in two gerbera daisies about 10 inches apart. One is doing great and the other wilts almost every day. They came from the same nursery. Any ideas?
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