Answer: Your gerbera suffered from lack of water and a shock from going outdoors into the sunshine. The flowers are spent and will not produce viable seeds so cut the flower stalks off the plant, down as far as you can so the remaining foliage will hide the cut stems. Then put your plant in a shady spot outdoors or in a bright spot indoors. If you intend to keep in outside, gradually move it from the shade into a sunny spot so it can get used to the intense light. Keep the soil moist but not soggy wet and just give your plant a chance to recover. It should perk up in a few weeks. Don't pull the damaged leaves off; allow them to die on their own. As long as they are green they are manufacturing and transporting energy to the roots. Once they turn brown and die, you can cut them away from the plant.
Hope your gerbera recovers soon!
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