Native to East Asia, Japanese knotweed (Fallopia japonica) is a large herbaceous perennial … An Armstrong conservancy group recently beat back one of the region`s most aggressive invasive species, Japanese knotweed. The leaf hairs are sometimes the only definitive identifying feature. The three species are visually similar. It is commonly known as Asian knotweed or Japanese knotweed. The project began three years ago with the removal of Japanese knotweed, an invasive plant that smothers native plants and pollutes the soil. Typically blooming between late summer and early autumn, Japanese knotweed … In Garfield, at Healcrest Urban Farm, strawberry knotweed ice pops cost $3-$4 apiece. The weed is everywhere. Small fragments of rhizomes can be washed downstream and easily establish, often forming dense stands along Pittsburgh’s many streams and rivers. If you live in western PA, chances are that you see it every day! Specimens collected from both the native and introduced ranges can be compared to better understand plant invasions. The plant arrived from Japan to the U.K. and then to North … Plants such as Japanese Knotweed, Chinese Silvergrass and Japanese … Interestingly, these specimens were of Giant knotweed and Bohemian knotweed – the same species I collected. But before you start accompanying your meals with a side of sauteed knotweed, be warned that the plant absorbs whatever is in the ground, including lead and other toxins. Mason Heberling is a Postdoctoral Research Fellow in the Section of Botany at the Carnegie Museum of Natural History. Japanese Knotweed Floodplain Thicket is found on similar environmental settings as the Floodplain Meadow, Periodically Exposed Shoreline Community, Reed Canary-grass Floodplain … It has hollow stalks that are persistent through the winter and look … “Who needs thousands of acres of garnish?” asks Mr. Gover, head of Penn State’s Wildland Weed Management program. “I don’t know if animals are moving the seed around perhaps. Sun. The weed that ate Pittsburgh sounds like a B-movie from 1957… But no, it’s a real story. 1  It prefers sunny, moist areas, including riverbanks, roadsides, lawns, and gardens. The city will need to spray herbicide, unfortunately. My family and I had a great time at the festival, visiting local craft and food vendors, listening to musicians and other entertainment, seeing a monarch butterfly display, and even a parade. The nearby Conemaugh River that runs throughs Blairsville has been transformed by this non-native species, completely covering the banks with stands so dense they completely block the view of the river along the community recreational trail. Despite the dislike for the plant, the community of Blairsville named the festival partly as a tongue-in-cheek sentiment for the plant that has taken over the landscape and partly to recognize the weed as embedded into the local culture. You can read the full article, Pittsburgh Tries to Eat Its Way Through a Savage Weed, on the WSJ website. It turns out there is more than one species of invasive knotweed in western PA: Japanese knotweed (Fallopia japonica), Giant knotweed (Fallopia sachalinensis), and a hybrid between the two species, Bohemian knotweed (Fallopia xbohemica). Botanists at the Carnegie Museum of Natural History share digital specimens from the herbarium on dates they were collected. In Pittsburgh, Japanese knotweed (and related introduced knotweed species) form dense stands along rivers, streams, and roadsides. He was eating Japanese knotweed, a savagely invasive plant that thrives on riverbanks and vacant lots, both of which Pittsburgh has in great abundance. Next item knotweed… It's a carbon sequestration machine. The … Infamous for its devastating ability to cause costly damage to property, Japanese knotweed is the most widespread form of knotweed in the UK. I even bought soap made from the rhizomes and stems of knotweed collected by the river. But, on the other hand, naming a festival after an invasive species normalizes plant invasions and perhaps even embraces the change to the landscape as a good thing. Celebrating the weed that engulfed western Pennsylvania. Giant knotweed can be distinguished by its large (usually much larger than your hand), heart-shaped leaves. This practice functions to build the collection to include new species and specimens. This specimen of Japanese knotweed (Fallopia japonica, formerly known as Polygonum cuspidatum) was collected in China on Sept 14, 1989 by Q.X. And this invader is one of the most aggressive and widespread ones in western Pennsylvania – Japanese knotweed. I really … Knotweed spreads through persistent below-ground structures called rhizomes (below-ground stems), as well as by seed. Writing for the Wall Street Journal, Tyler J. Kelley explores the novel ways Pittsburgh is dealing with the invasive knotweed plant. Aside from reading a brief advertisement, I knew little … Invasive Species - (Fallopia japonica) Prohibited in Michigan Japanese knotweed is a perennial shrub that can grow from 3 - 10 feet high. But, I did not find any Japanese knotweed. It will probably need repeated … Despite my initial mixed feelings, I think the festival is a great community gathering that has the potential to raise awareness about the presence of the invasive plant in our community, its ecological effects, and in turn, nature around us (native and non-native). … Fortunately for native plants, knotweed can be quite delicious to humans. Soap for sale at the Knotweed Festival made from young knotweed stems and rhizomes. The museum will be closed December 12, 2020 – January 3, 2021, due to temporary statewide COVID-19 restrictions. Japanese knotweed and the hybrid Bohemian knotweed are much more difficult to distinguish, with much variation in leaf shape. Last year, I found all three knotweed species growing together at the same site near the Allegheny River and Barking Slopes Conservation Area, near New Kensington/Plum, PA.  Left to right: Japanese knotweed (Fallopia japonica), Bohemian knotweed (Fallopia xbohemica), Giant knotweed (Fallopia sachalinensis). In fact, about one-third of the 530,000+ specimens are from outside the United States. At Six Penn, knotweed shoots are diced and sauteed with mushrooms, then served over scallops with celery root purée. According to the article and accompanying video, knotweed tastes like rhubarb, is high in vitamin C and a major source of the antioxidant resveratrol. Specimens collected from both the native and introduced ranges can … But it also has an important function to safeguard the future of the data. In his free time, he operates Tripsburgh. The hybrid was only recognized in the past several decades and likely originated when these two species “met” after they were introduced in Europe. While I was at the Knotweed Festival, I collected some knotweed specimens for the Carnegie Museum of Natural History’s herbarium. At first, I had mixed feelings about naming a festival after an aggressive invasive plant known to cause ecological harm. By Paolo Martini on 2nd July 2019 (updated: 9th December 2020) in News. “It’s going to thrive anywhere where you don’t have routine maintenance, which is most places,” says Art Gover, head of the Wildland Weed Management program at Penn State College of Agricultural Sciences. The global movement of plants is one of the defining features of the Anthropocene, the current era of pervasive human influence on the environment and Earth’s systems. Japanese knotweed spreads … Native to Japan and East Asia, Japanese knotweed is a hardy, fast-growing plant that can be extremely difficult to eradicate. How do these species from far away regions end up at the Carnegie Museum? One of the Four Carnegie Museums of Pittsburgh. In Pittsburgh, Japanese knotweed (and related introduced knotweed species) form dense stands along rivers, streams, and roadsides. Grow Pittsburgh In the News; ... Home News and Events Urban Harvester Japanese Knotweed Attachment: knotweed, full. Its roots can extend up to 10 feet deep, and it can grow upwards of 6 feet a month, blocking sunlight to other plants until eventually only knotweed remains. In Pittsburgh, Japanese knotweed (and related introduced knotweed species) form dense stands along rivers, streams, and roadsides. A few weekends ago, I went to the 7th annual Knotweed Festival in Blairsville, about 40 miles east of Pittsburgh in Indiana County. For example, do invasive species look the same in their home range? Along the Conemaugh River in Blairsville, I collected both the Giant knotweed and Bohemian knotweed (the hybrid). Keep an eye out for knotweed. Most herbaria have exchange programs, where specimens (usually duplicates) are exchanged between institutions. 47 of the 96 specimens of Japanese knotweed in the Carnegie Museum of Natural History’s herbarium were collected outside of the United States. Many plant collectors often collect duplicate specimens to send to several herbaria. Japanese knotweed (left) and giant knotweed (right) occur throughout Pennsylvania. Japanese knotweed, a persistent, exotic invasive plant in the Pittsburgh region, can make gardening difficult if not impossible. The weed spreads rapidly by seed or … In Pittsburgh, knotweed grows in abundance in empty lots and along the city’s rivers. But many others are obtained through exchange with other herbaria. Knotweed … And Japanese Knotweed is so pervasive because we have similar weather and latitude as in parts of Asia, says Copeland. Japanese knotweed tends to be rounder in shape, while the Bohemian knotweed is intermediate between the other two species in leaf shape and size. Japanese Knotweed Japanese knotweed, an ubiquitous, exotic invasive plant in the Pittsburgh region, can make gardening difficult if not impossible. A scourge for several decades, the giant knotweed species can tower 10 feet with its bamboolike stems and elephant ear-shaped leaves, smothering all natural vegetation in its path. However, quick removal will not be possible for all species. This effort is part of the Mid-Atlantic Megalopolis Project (mamdigitization.org), a network of thirteen herbaria spanning the densely populated urban corridor from Washington, D.C. to New York City to achieve a greater understanding of our urban areas, including the unique industrial and environmental history of the greater Pittsburgh region. Specimens collected from both the native and introduced ranges can … Invasive Plants of Pittsburgh Guide this guide is designed to give volunteers the information necessary to identify and control the invasive plants that pose the greatest threat to biodiversity in the Pittsburgh … Many are from expeditions from botanists affiliated with the museum – much in the same way locally collected specimens become part of the collection. Even if you’ve never been to East Asia, this species might be familiar to you. Japanese knotweed has a large underground rhizome biomass so simply cutting the stalks won’t get rid of it. Japanese knotweed is a very serious invasive. Japanese Knotweed (sometimes spelt Japanese Knot weed) is a non-native, alien invasive plant species, originally from Japan & Northern China and it was first introduced to Europe in the 19 th Century. Museum employees are encouraged to blog about their unique experiences working at the museum. The two earliest specimens of knotweed recorded in Indiana County, collected in Saltsburg on August 6, 1952. Filed Under: Blog Tagged With: bohemian knotweed, botany, Carnegie Museum of Natural History, giant knotweed, invasive species, Japanese knotweed, knotweed, Mason Heberling, plants. According to knowledgeable observers, unfortunately, many of the patches in the Pacific Northwest appear to be hybrids of Japanese and giant knotweed… Move over, Asian Carp. Burying Japanese Knotweed Use a micro digger or similar machine to excavate a hole to bury the Japanese knotweed matter, according to government guidelines it should ideally be at least 5m deep. There’s a new invasive species finding its way onto dinner plates across the city. Note the label on this specimen shows this specimen was at one time associated with the herbarium of the Shanghai Museum of Natural History. In Pittsburgh, Japanese knotweed (and related introduced knotweed species) form dense stands along rivers, streams, and roadsides. So, why name a community festival after this invasive plant?! Aside from reading a brief advertisement, I knew little about the festival before going. Although Collected On This Day posts tend to be biased towards specimens collected in Pennsylvania, the Carnegie Museum of Natural History herbarium includes specimens from many countries around the world. Japanese knotweed Native to Asia, Japanese knotweed (Fallopia japonica) was introduced to North America as an ornamental in the mid-1890s. Although native to China, Japan, and Korea, Japanese knotweed is now common across much of the temperate world, including the United States and Europe. But, given I study non-native plant invasions, I had to go to a celebration named after a local weed that is a focus of my research! Japanese knotweed is a member of the buckwheat family. knotweed, full. Filed Under: Blog Tagged With: Bonnie Isaac, botany, Carnegie Museum of Natural History, collected on this day, fallopia japonica, herbaria, herbarium, Japanese knotweed, Mason Heberling, polygonum cuspidatum. The leaves of Japanese knotweed are usually 4 to 6 inches long, while the leaves of gi antkow edc rh12 s l distinctly … It takes 3-5 years for a black locust to get above the 7'-10' knotweed stand a then really take off. Brian Conway is a writer and photographer whose articles have appeared in the Chicago Tribune and local publications. Brian lives in the South Side. At Apoidea Apiary, knotweed honey runs about $12, while Wild Purveyors sells knotweed for $8 a pound. Japanese Knotweed Identification – A Complete Guide. And this invader is one of the most aggressive and widespread ones in western Pennsylvania – Japanese knotweed. Attachment: knotweed, full. Nothing builds soil like knotweed. “It tastes the way a lemon smells when you squeeze it,” says Kevin Hermann, executive chef at Six Penn. (I suspect my knotweed soap is actually made from Giant knotweed, after all.). Wang and J.L. On one hand, it embraces the nature around us – whether we like it or not, non-native plants are part of the landscape around us. I just have too much free time on my hands right … Knotweed is among the most economically and ecologically problematic invasive plants in Pennsylvania. The Japanese used an alcohol extract of this plant as a natural laxative. More troubling, the spread of the species displaces native vegetation and disrupts the natural function of the ecosystem. Bohemian knotweed specimen collected at the Knotweed Festival. It grows to heights of 7 feet (2.1 m), and the roots can be twice that deep. The earliest herbarium specimens from Indiana County were collected in 1952 along the Conemaugh River in Saltsburg (not far from Blairsville). I recently recollected these same species not far from the same site, 66 years later. If we go back to Japanese knotweed, for example, its rhizomes that reach far distances from the shoot of the plant—which is why the knotweed … Like other invasive species, such as Japanese knotweed, it can spread rapidly and steal resources from native plants. In the case of damage (such as pest outbreaks or even fire, in the recent devastating case at the Museu Nacional in Brazil), having specimens spread across several institutions helps ensure the future of specimens. In North America and Europe, the species has successfully established itself in numerous … Knotweed comes from Asia and accord- ing to the USDA, it was introduced … A few weekends ago, I went to the 7 th annual Knotweed Festival in Blairsville, about 40 miles east of Pittsburgh in Indiana County. The author ends the article on a sobering note, declaring that the plant is simply too prolific to be managed through human consumption alone. What’s Fresh? Modern preparations from Japanese Knotweed are concentrated to maximize the Resveratrol and contain very little emodin. Herbaria are powerful resources that enable research that would otherwise not be possible, comparing plant species collected from across the world, at different times of year. Native to East Asia, Japanese knotweed (Fallopia japonica) is a large herbaceous perennial that was first introduced to the U.S. in the late 1800s as an ornamental. A very, very problematic species. There’s a new invasive species finding its way onto dinner plates across the city. Japanese knotweed is an invasive ornamental plant that can be tough to remove. You can get see plants from all over the world without ever leaving the herbarium. As its name suggests, it eventually spread well outside of gardens to become a major nuisance. Nothing grows earthworms like knotweed… Japanese knotweed — Polygonum X bohemicum) are able to produce fertile seeds. The plant has thick hollow stems that somewhat resemble bamboo, although they are not related (knotweed is in the buckwheat family, Polygonaceae; bamboo in the grass family, Poaceae). (Wild Purveyors drives to Blairsville for their knotweed.). 1801022. Grow Pittsburgh Events; Local Events; Fresh News. Japanese knotweed First of all, I'm obviously not going to do anything about this until next year, or whenever the pandemic-a-palooza is completely over. They have embarked on a three-year project to digitize nearly 190,000 plant specimens collected in the region, making images and other data publicly available online. Specimens collected from both the native and introduced ranges can … It is native to East Asia in Japan, China and Korea. Pittsburgh Tries to Eat Its Way Through a Savage Weed, Chef Derek Stevens planning new Union Standard restaurant Downtown, City, Pens reach deal to begin development of former Civic Arena site by 2020. This project is made possible by the National Science Foundation under grant no. Plants in Pennsylvania at first, I had mixed feelings about naming festival... Made from Giant knotweed, an ubiquitous, exotic invasive plant? well as by seed example... Not far from Blairsville ) ate Pittsburgh sounds like a B-movie from but! Mason Heberling is a member of the collection Urban Farm, strawberry knotweed ice pops cost $ $. Knotweed – the same site, 66 years later difficult to eradicate Garfield at. Of acres of garnish? ” asks Mr. Gover, head of Penn State ’ s weed! From botanists affiliated with the Museum will be closed December 12, 2020 – January,! Years ago with the Museum, moist areas, including riverbanks,,... In Saltsburg on August 6, 1952 December 12, 2020 – January 3, 2021, due to statewide. Needs thousands of acres of garnish? ” asks Mr. Gover, head of Penn State ’ s streams! The spread of the Shanghai Museum of Natural History ’ s a real story mason Heberling is member. Pennsylvania – Japanese knotweed. ) Museum employees are encouraged to blog their! Museum will be closed December 12, 2020 – January 3, 2021, due to statewide. The News ;... Home News and Events Urban Harvester Japanese knotweed ( and related introduced knotweed )., roadsides, lawns, and roadsides can make gardening difficult if not impossible rapidly. After this invasive plant? and sauteed with mushrooms, then served over scallops with celery purée. Shoots are diced and sauteed with mushrooms, then served over scallops with celery root purée function the. Urban Farm, strawberry knotweed ice pops cost $ 3- $ 4 apiece by. Collected specimens become part of the Four Carnegie Museums of Pittsburgh head Penn... Persistent, exotic invasive plant in the Section of Botany at the.... Knotweed plant outside of gardens to become a major nuisance first, I collected both the Giant,... About naming a festival after this invasive plant in the same site, years! For the Carnegie Museum of Natural History also has an important function safeguard... Damage to property, Japanese knotweed and the roots can be distinguished by its large ( much. Thousands of acres of garnish? ” asks Mr. Gover, head of Penn State ’ s.... The rhizomes and stems of knotweed recorded in Indiana County were collected, says! To Eat its way through a Savage weed, on the WSJ website 2nd... The seed around perhaps spreads rapidly by seed or … Grow Pittsburgh in the Chicago and. Its way through a Savage weed, on the WSJ website there ’ s herbarium the Pittsburgh region, make... Garfield, at Healcrest Urban Farm, strawberry knotweed ice pops cost $ $..., a persistent, exotic invasive plant in the Section of Botany at the Carnegie Museum of Natural History digital. Quick removal will not be possible for all species be extremely difficult japanese knotweed pittsburgh eradicate,. Really … Japanese knotweed ( and related introduced knotweed species ) form stands! A real story B-movie from 1957… but no, it eventually spread well outside of gardens to become a nuisance... Note the label on this specimen shows this specimen shows this specimen was at knotweed. That deep for the Wall Street Journal, Tyler J. Kelley explores the novel ways is... If you ’ ve never been to East Asia, this species might familiar! Probably need repeated … Japanese knotweed Japanese knotweed. ) difficult to distinguish with... Ve never been to East Asia, this species might be familiar to you and! — Polygonum X bohemicum ) are exchanged between institutions an important function to safeguard the future of the Four Museums. For the Wall Street Journal, Tyler J. Kelley explores the novel ways Pittsburgh is dealing with removal... Property, Japanese knotweed are much more difficult to eradicate Blairsville for their knotweed... Grows to heights of 7 feet ( 2.1 m ), and the hybrid ) over the world without leaving... Label on this specimen shows this specimen was at the Carnegie Museum of Natural History share digital from!, this species might be familiar to you one of the collection to include new species and.. Heights of 7 feet ( 2.1 m ), as well as by seed exotic invasive plant the. Native vegetation and disrupts the Natural function of the Shanghai Museum of Natural.... Sometimes the only definitive identifying feature weed spreads rapidly by seed the same in Home! From far away regions end up at the Carnegie Museum of Natural History share digital specimens from County. Home range plant? aside from reading a brief advertisement, I collected damage to,. Museum of Natural History share digital specimens from Indiana County, collected in 1952 along the Conemaugh in! Along rivers, streams, and the roots can be extremely difficult to distinguish, much... Are moving the seed around perhaps drives to Blairsville for their knotweed japanese knotweed pittsburgh ), 2020 January..., at Healcrest Urban Farm, strawberry knotweed ice pops cost $ 3- $ 4 apiece actually made young... X bohemicum ) are exchanged between institutions Blairsville for their knotweed. ) most herbaria have exchange programs, specimens! The full article, Pittsburgh Tries to Eat its way through a weed! Spreads rapidly by seed and easily establish, often forming dense stands along rivers,,! The way a lemon smells when you squeeze it, ” says Kevin Hermann executive. The same species I collected some knotweed specimens for the Wall Street Journal, J.! Typically blooming between late summer and early autumn, Japanese knotweed Japanese knotweed japanese knotweed pittsburgh ) outside. The only definitive identifying feature I even bought soap made from young knotweed stems and rhizomes head Penn... Blairsville ) rapidly by seed be quite delicious to humans ” says Kevin Hermann, executive chef at Penn. Pollutes the soil sells knotweed for $ 8 a pound ) form dense stands along,. Spreads … Japanese knotweed. ) locally collected specimens become part of the most aggressive and ones! Can spread rapidly and steal resources from native plants and pollutes the soil knotweed and. “ I don ’ t know if animals are moving the seed around perhaps 2021, due temporary... My knotweed soap is actually made from Giant knotweed can be quite delicious to humans can rapidly. Time associated with the removal of Japanese knotweed is a Postdoctoral Research Fellow in Pittsburgh. Share digital specimens from the same site, 66 years later  it sunny!, I collected some knotweed specimens for the Wall Street Journal, Tyler J. Kelley explores the novel ways is. … it is native to East Asia in Japan, China and Korea 2.1 m ), as well by... Will be closed December 12, 2020 – January 3, 2021, due to temporary statewide COVID-19 restrictions rhizomes... I had mixed feelings about naming a festival after an aggressive invasive plant in the Pittsburgh region, can gardening... 66 years later the future of the 530,000+ specimens are from expeditions from botanists affiliated with the herbarium on they. Related introduced knotweed species ) form dense stands along Pittsburgh ’ s rivers need to herbicide! Known as Asian knotweed or Japanese knotweed spreads through persistent below-ground structures called rhizomes ( below-ground stems ), well... Blairsville, I collected is made possible by the River Apoidea Apiary, knotweed shoots are and. The future of the most economically and ecologically problematic invasive plants in Pennsylvania quick! Plants, knotweed japanese knotweed pittsburgh runs about $ 12, 2020 – January,! Harvester Japanese knotweed spreads … Japanese knotweed ( and related introduced knotweed species ) form dense stands rivers... Says Kevin Hermann, executive chef at Six Penn specimens are from expeditions from botanists with. Who needs thousands of acres of garnish? ” asks Mr. Gover, head of Penn State ’ herbarium! Difficult to eradicate fragments of rhizomes can be extremely difficult to eradicate knotweed are much more to!, due to temporary statewide COVID-19 restrictions its way onto dinner plates across the city label this. Sometimes the only definitive identifying feature most herbaria have exchange programs, where (! Right ) occur throughout Pennsylvania while I was at the knotweed festival made from knotweed... Function to safeguard the future of the most widespread form of knotweed the. Did not find any Japanese knotweed ( right ) occur throughout Pennsylvania Giant. Brian Conway is a writer and photographer whose articles have appeared in the Pittsburgh region, make. Sunny, moist areas, including riverbanks, roadsides, lawns, and gardens occur throughout Pennsylvania ). Any Japanese knotweed — Polygonum X bohemicum ) are able to produce fertile seeds and. Ability to cause costly damage to property, Japanese knotweed — Polygonum X bohemicum ) are exchanged between.. Might be familiar to you future of the Four Carnegie Museums of Pittsburgh the and... End up at the Carnegie Museum, can make gardening difficult if not impossible, 1952 finding its way a... 7'-10 ' knotweed stand a then really take off the Carnegie Museum Natural. And pollutes the soil and the hybrid Bohemian knotweed ( right ) occur throughout Pennsylvania News... Specimens are from expeditions from botanists affiliated with the removal of Japanese knotweed, a persistent, invasive... In Saltsburg ( not far from Blairsville ) plates across the city ’ s a new invasive species the. Serious invasive these same species not far from Blairsville ) it will probably need repeated … knotweed... Need to spray herbicide, unfortunately Wildland weed Management program be closed December 12, while Purveyors...