Answer: Your question is only partially here so I can only offer some general information. Impatiens can stop growing if the weather gets hot. Even if they wilt the roots will send out new stems and foliage when the weather cools down a little. Other problems with impatiens include sudden wilting from fungal diseases (crown rot) which can happen when the soil is kept too moist, and Bacterial Wilt where yellowish masses of bacteria ooze out when the stems are cut. The stems are often rotted at ground level. I hope your plants are just reacting to the weather and have not developed a fungal or bacterial disease because there are no cures for these diseases.
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