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WATCH LEAVES FOLLOW THE SUNLIGHT Do leaves like sunlight? How could we tell? Look at the lovely coleus (pronounced "co-lee-us") and the beautiful geranium (pronounced "jer-ane-ee-um") I have brought to school today. Coleus usually grows inside the house, near a sunny window, and geranium grows outside. In some very warm climates, coleus can be outside, but it doesn't like to get cold. Geraniums are tough, and can live outside, almost anywhere on earth. I'll put them both on the counter by the window, and every hour, we will look at them to see if the leaves have moved. We could draw pictures that show the direction that the leaves face as the sun passes across the window during the daytimes. Which way do you think the leaves will face when we come into the classroom tomorrow morning? At noon tomorrow, we will turn the plants, and watch to see if the leaves turn toward the light during the afternoon, and if they do, we want to make a note of how long it takes them to turn so that they face the sun again. Does sunlight make the plants grow? I have read that leaves grow on their shaded sides, and that pushes the faces of the leaves toward the sun. Geranium flowers don't last very long, but we can watch the flowers to see if they turn toward the sun, also. That would mean that the stems are growing on their shaded sides. What would happen to the plants if we take them away from the window so they can't see the sun? We can try it, and see what happens. Some kinds of leaves lose their pretty colors if they can't see the sun.  Any problems with this page? Send URL to
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