I am running a big vegetable garden where I work for the first year and just lost about 200 plants this past weekend due to a light frost. I've grown almost all of them from seed for the past two months.
I wasn't even told about it by anyone on site this weekend. I discovered it myself when I came in this morning. Quite literally the last person to know.
What really gets me is that I wasn't planning on transplanting the summer crops into the ground until next week, but our manager was so insistent that I was wrong to plant so late. That, because we were having some 80°F days in April (with 40-45°F nights...), the tomatoes and peppers should go in the ground as soon as possible.
Our manager and the employees he listened to have never lived somewhere that has frost and they literally couldn't tell a tomato plant from a pepper plant on planting day.
So anyways, I am buying replacement seedlings this week, replanting, and installing the row covers that were never taken out of their boxes.