Our forests are dynamic

And changing every day

Trees and forests have dynamic life cycles and are constantly evolving. As forests move through each stage of the cycle, they undergo orderly changes and become suitable for different communities of plants and animals. Each state sets the conditions for the next stage.

In this section, learn about the parts of a tree, the life cycle of a forest and the growth and mortality of trees. Watch videos and find more great related content such as posters and classroom materials.

FOREST FACT:  Did you know that sequoias once grew in Idaho? Fossils of sequoias and redwoods have been found in Idaho that date from the Paleogene time period — more than 50 million years ago.


Click here to watch a short animated video about ecosystems.