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The flowers are small, produced on short, dense panicles up to 10 cm (4 in) long in late summer or early autumn; it is gynodioecious, with male and female (male sterile) flowers on separate plants. The species is closely related to the Japanese knotweed, Reynoutria japonica , and can be distinguished from it by its larger size, and in its ...
Following earlier studies, imported Japanese knotweed psyllid insects Aphalara itadori, whose only food source is Japanese knotweed, were released at a number of sites in Britain in a study running from 1 April 2010 to 31 March 2014. In 2012, results suggested that establishment and population growth were likely, after the insects overwintered ...
Aphalara itadori, the Japanese knotweed psyllid, is a species of psyllid from Japan which feeds on Japanese knotweed (Reynoutria japonica).. The UK Government licensed the use of this species as a biological control to counter the spread of Japanese knotweed in England; this was the first time that biological control of a weed was sanctioned in the European Union.
Knotweed is a common name for plants in several genera in the family Polygonaceae. Knotweed may refer to: Fallopia; Persicaria; Polygonum; Reynoutria. Reynoutria japonica or Japanese knotweed, a highly invasive species in Europe and North America
Gallerucida bifasciata, Japanese knotweed leaf beetle. Gallerucida is a genus of skeletonizing leaf beetles in the family Chrysomelidae. There are at least 19 described species in Gallerucida. They are found in Indomalaya and eastern Asia. [1] [2]
Bohemian knotweed is a nothospecies that is a cross between Japanese knotweed and giant knotweed. It has been documented as occurring in the wild in Japan. [ 1 ] The scientific name is accepted to be Reynoutria × bohemica , [ 2 ] but it may also be referred to as Fallopia × bohemica and Polygonum × bohemicum .
That can be dangerous. And as much of the country braces for winter weather, icicles may be a common sight. Icicles clinging to the side of a property can signal trouble in a wide variety of ways.
Japanese Knotweed Frangula alnus: Glossy Buckthorn Hedera helix: English Ivy Hemerocallis fulva: Daylily Heracleum mantegazzianum: Giant Hogweed Hesperis matronalis: Dame's rocket Hibiscus syriacus: Rose of Sharon Humulus japonicus: Japanese Hops Iris pseudacorus: Yellow iris Koelreuteria paniculata: Goldenrain tree Lactuca serriola: Prickly ...