If your in an area with real hot strong sun like the SE US, a 1 gal container is going to have troubles during the summer. Keeping it wet all the time is not usually the answer either. Try moving it to more of a slightly part shade area till it recovers a bit at least for part of the days. Let it dry out at least somewhat between waterings. When the roots fill up that container, move it to a bigger one. Outdoor grows in the south go much better directly in the ground, but you have got to get them in the ground fairly early. Otherwise it gets too hot, too quick. If they have some time to get established before the real heat begins, they will do better. Mulch helps. I always try and put plants in the ground when rains are comming in the next few days so they can get going before the sun fries them. You know how the weather sytems in the South always come from West to East. Plant them when its like two days away. Water them in good when planting. By the time that weather sytem comes through and passes, they should be going.