Our Knotweed! app has been updated. Check out the new slides and photos!

Knotweed! has been updated with new slides, seasonal photos and information. It is  now compatible with iOS 12.0. Below is a sample slide illustrating Japanese knotweed's ability to do serious property damage. Check out more of our slides for each knotweed species in the Quick ID section under each species in the app. Also visit the knotweed page for similar information. New seasonal photos and descriptions will help you ID all species of knotweed throughout the seasons. Can you identify Japanese knotweed along the highway right now? The canes are typically reddish at this stage and very easy to spot. See the photo below and download knotweed! for more information.