Complex sentence: In Mississippi, cranesbill is the key early season host plant, while in Texas, cotton is principle host plant, but wild tobacco, vervain, ruellia, mallow are all important hosts as well.
Split into simpler sentences: In Mississippi, cranesbill is the key early season host plant. In Texas, cotton is principle host plant, but wild tobacco, vervain, ruellia, mallow are all important hosts as well.