Little Questions in the Big Woods
How do trees know when it’s spring?
A It gets warmer.
B The squirrels tell them.
C The days get longer.
Trees can sense temperature and light. Changes in the weather trigger changes in the trees. Trees slow down for winter when nights get longer. They wake up again when daylight lasts longer than night. They are not fooled by shade or street lights; sunlight is a different “flavor” of light to them. Trees also know it’s time to grow new leaves when they feel several weeks of warm weather after a long cold spell. A and C
Why is that tree eating a sign?
A To get extra iron.
B The sign got in the way.
C It’s controlled by a sign-eating fungus.
Trees never stop growing. They grow taller from the top and wider by adding new layers of wood just under the bark. If some rude person nails
