Need help growing Charentais melon

This is my third try at growing Charentais. The last two years I planted seeds directly into the garden and lost all the plants over the summer. This year I started plants indoors, along with some Honey Rock cantaloupe.
I fed, watered and hardened off both types the same. When I transplanted to the garden all but one Charentais died the first day but the Honey Rock are doing great.
Even while I was hardening them off the Charentais did not look as healthy as the other melon...they would wilt, look half dead, then bounce back.

What am I doing wrong? I've heard these are great melons but maybe I should just give up trying them here...zone 4 WI.


Oops, posted in the wrong spot....maybe a mod could move this to the gardening section. Thanks