"Asian jumpseed has only recently started to escape into natural areas, so now is the time to practice early detection and rapid response (EDRR). Leaves of Virginia jumpseed appear narrower with a more rounded base and elongate tip. Leaves of Asian jumpseed have a more wedge-shaped base and appear broadest closer to the tip. ...The chevron usually persists [throughout the growing season] but can start fading towards fall. You can find the invader massing in forested uplands and floodplains. In the DC-Baltimore Metro area, invasive populations are spreading in Baltimore County, Maryland, and Arlington County, Virginia (Simmons et al. 2020). The invasive is increasingly escaping throughout the mid-Atlantic region, out to Ohio and up to Massachusetts, as well as other locations in the US and Canada (iNaturalist, Weakley’s 2022 Flora). ... Due to Persicaria species’ tendency to hybridize, it is also possible that Asian jumpseed could be interbreeding with Virginia knotweed and so altering the native’s genetics." Maryland Invasive Species Council Website