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  • Reynoutria japonica - Wikipedia
    Reynoutria japonica, synonyms Fallopia japonica and Polygonum cuspidatum, is a species of herbaceous perennial plant in the knotweed and buckwheat family Polygonaceae [1][2] Common names include Japanese knotweed[2] and Asian knotweed [3] It is native to East Asia in Japan, China and Korea In North America and Europe, the species has successfully established itself in numerous habitats; it
  • Invasive knotweed identification and control - King County
    Invasive knotweed identification and control Information about the noxious weeds known as invasive knotweed (hybrid knotweed, itadori knotweed, giant knotweed, and garden knotweed) Invasive knotweeds are also known by their scientific names, Fallopia x bohemica, Fallopia japonica, Fallopia sachalinensis, and Persicaria wallichii
  • How to Get Rid of Japanese Knotweed - The Spruce
    Japanese knotweed (Polygonum cuspidatum) is a tough, invasive plant It usually requires a multi-prong approach to achieve complete eradication
  • Japanese Knotweed - Penn State Extension
    Japanese knotweed (Fallopia japonica) is an invasive perennial and noxious weed in PA This article will assist with identification and provides recommendations for control, including a management calendar and treatment and timing table
  • Japanese Knotweed - US Forest Service
    Knotweed spreads quickly, forming dense stands that prevent regeneration of native vegetation and suppresses the growth of existing vegetation Wildlife that depends on native vegetation for food and shelter are displaced Furthermore, organisms within the stream are deprived of the insects and native plant material that fuel the aquatic “food chain,” ultimately reducing habitat quality
  • Japanese Knotweed | Cornell Weed Identification
    Japanese Knotweed (Reynoutria japonica) is an invasive weed that is problematic in perennial agricultural systems such as berry crops and tree fruit It is also found on landscapes, sodded storm drains, river banks, roadsides, waste areas and untended gardens This weed tends to thrive on moist, well-drained, nutrient rich soil and is present throughout the Northeast Japanese knotweed and the
  • How to Stop Japanese Knotweed from Taking Over Your Garden
    Japanese knotweed looks quite pretty when it’s in full bloom in late summer to early fall But it’s actually a fast-growing invasive perennial weed that can take over your landscape in a hurry “It likes moisture and more acidic soil,” says Pamela Bennett, associate professor and state master gardener program director at Ohio State University “It prefers stream banks, forest edges
  • What Does Japanese Knotweed Do to Ecosystems and Homes?
    Japanese knotweed can crack foundations, tank property values, and crowd out native plants Here’s what makes it so destructive and hard to remove
  • Japanese Knotweed - University of Maryland Extension
    Japanese knotweed (Reynoutria japonica, formerly named Fallopia japonica and Polygonum cuspidatum) is a flowering perennial native to Eastern Asia It was introduced to the U S in the late 1800s for ornamental use and erosion control, and has since become invasive Additional common names include fleeceflower and Mexican or Japanese bamboo Cultivar 'Variegata' has been grown for its cream
  • Invasive Plant Factsheet: Japanese Knotweed | Integrated Pest . . .
    Japanese knotweed thrives in disturbed areas, along roadsides, and on stream or river banks, forming dense thickets that pose a significant ecological threat to riparian areas





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