Japanese knotweed is a very aggressive species that is capable of crowding out all other vegetation. And quickly shrinking back into the ground. Chemical treatment is the only viable control. Blog. NLNature ( www.nlnature.com ) is an online atlas of wildlife in Newfoundland and Labrador based on observations by residents and tourists. Sprays of tiny white flowers are produced among the upper leaf axils in September. Giant Knotweed has also been introduced to Ontario. Well, here's some Japanese knotweed growing up in the backyard pretty fast. Bohemian Knotweed is a hybrid of Japanese and Japanese knotweed; Scientific Name: Fallopia japonica: Native: Native to Eastern Asia. Gratitude in the workplace: How gratitude can improve your well-being and relationships The spring stems are reddish. We welcome any sighting of plants, animals, and other things (e.g., interesting rocks, landmarks) in Newfoundland and Labrador. Newfoundland's fickle spring finally arrived sometime in June. What is visual communication and why it matters; Nov. 20, 2020. Japanese Knotweed, locally referred as Mile-a-Minute, is a fast growing plant that can quickly take over a backyard garden in just a season. In North America, knotweed is found from Nova Scotia and Newfoundland south to North Carolina, throughout most of the Midwest, and in the coastal areas of Oregon and Washington (Patterson 1976; Locandro 1978; Pauly 1986). They are robust plants which may reach 2 m or more. Mature stalks are hollow and the leaves are somewhat rounded. I don't remember such lushness along Rennie's River in all the years we have lived in St. John's. Patterson 1976; Conolly 1977). Japanese Knotweed (AKA Mile-a-Minute) The invasive species that’s been the topic of frustration for many is also tasty and healthy. As with Poison Ivy, Glyphosate (Round Up) is the product of choice for Japanese Knotweed, and the timing is the critical factor in successful control. Photo courtesy of Wasyl Bakowsky. It is also available in the Europe, British Isles, USA, Canada, New Zealand and Newfoundland. Nov. 21, 2020. Japanese Knotweed is exceedingly difficult to eradicate by traditional means (it will sprout through asphalt). As its name indicates, Japanese knotweed is a native of Japan (Hickman 1993). However, it has become naturalized in North America, where it is found from Newfoundland … The agressive Japanese knotweed is also known locally as ‘mile-a-minute’ or ‘September mist’. Many people think it is some kind of bamboo because of its hollow stems and raised stem nodes, but it has no relation to true bamboo, which is actually a grass. Japanese Knotweed (Fallopia japonica) is an invasive, perennial herbaceous plant that is also known as ... Columbia, Nova Scotia and Newfoundland. Contributing to NLNature is easy, fun and valuable for science! Japanese knotweed, Fallopia japonica (formerly Polygonum cuspidatum), is an herbaceous perennial in the buckwheat family, Polygonaceae. 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