Beginner Gardening: white and dying tomatoes, 3 by Zacharythelost

Zacharythelost wrote:
we planted tomato, jalapeno, squash, cucumber, and onion seedlings.
all were doing well indoors.
then, the squash and cucumber began to turn white and whither.
all of the other plants began to follow suit. later we planted eggplants and they too are dying.
i\'m not sure if they were watered too much, started indoors too early, or have powdery mildew.
now all that remains is the jalapenos and the tomatoes which are in the pictures, along with the dying eggplants. i\'m trying to keep them alive, but am considering getting rid of them...