DO NOT let seedlings dry out!

We had a couple days of 90+ degrees and I didn't check my seedling for a couple days.  My coleus were very dry and I watered them - but only a few survived.  The older plants survived with minimal losses but a tray of very young petunias and this tray of coleus didn't fare so well.  When seedlings are very young - they can't survive a long period without water.   You need to keep them damp, but not sitting in water which means watering at lease once a day.   The older plants can handle it better and its best to let them dry out some before watering as this forces the roots to grow deep into the bottom of the plant.