I started some seeds indoors but realized that it was way too early. I managed to find sunny spots for all but a couple of plants. When they were about three weeks old, the "unlucky" two had to stay outside in the freezing cold and rain. Now, it's two weeks later and the two "outsiders" have a stem length of about 1/4 of the "insiders". Also, their stems are about twice as thick. The "outsiders" look a whole lot better than their indoor brothers. What might be causing this? Surely, it's not better for plant babies to live in 38 F? The indoor plants are sitting on the window sill in the sun. They are getting plenty of water and light. They live in a toasty 68 F house. Why are their stems growing so long and skinny, not being able to support the weight of the leaves? Is there such a thing as conditions that are 'too good'? Should I go ahead and plant everybody in the flowerbeds even though the temps still dip under 32 F on some nights?

---I just thought about something else... The outsiders never got watered by me because they kept getting rained on. Is tap water bad for plants?

Thank you for any insights!