Where Do Monarchs Get Water in the Winter? Backyard Observation Reveals a Clue Did you notice? Frost is on the grass in the foreground. It looks white. Dew is on the grass in the distance. It looks green. Frost When the frost melts... Dew ...it becomes dew.    When the sun's rays hit the ground, the frost melted and became dew.   Did you also notice? Sun and Shade The shade moved with time. The sun's rays reached the grass in the distant part of the meadow first. The dew has evaporated there. The grass is already dry. The grass in the shade is still wet.   What might this mean for thirsty butterflies? Think...then click for more > Copyright 2005 Journey North. All Rights Reserved. Please send all questions, comments, and suggestions to jn-help@learner.org