Each year I learn something new in gardening. We just transplanted some cucumber and squash seedlings and they all die after 2 days. I believe it might be too early for these hot season vegetables to be planted outdoor. For the past 2 days, the night temperature has been 5 degrees Celsius and I did not put a poly cover overnight. This might be too chilly for the young plants. Also, I only hardened them off for 3 days and this might not be enough. Any how, I am going to direct plant the squash seeds and see if this would be better. The cool weather, however, is good for the leafy plants like lettuce and spinach.