Woodland Threats Woodland Threats Our forests health are threatened daily by insects, diseases, invasive plants and more. Learn more about these by clicking on the links below. Insects There are several insects that cause issues in our woods. Woodland Insects Diseases Trees can get diseases that may shorten or end their life. Tree Diseases Storm Damage Storms can lead to a wide range of damage to trees. Storm Damage Timber Trespass Timber theft is the intentional stealing of timber. Timber Trespass Invasive Plants Invasive plants tend to take over if left unchecked. Invasive Plants Wildfire Fires damage to forests may decline your trees life span. Wildfire