Erect knotweed

Natalie Mueller is an at Cornell University who has spent years hunting for erect knotweed across the southern US and up into Ohio and Illinois.

Minnesota Seasons - Japanese knotweed

It is a beautiful herbaceous perennial plant that originally came from the Eastern part of Asia, and is found primarily within Japan, China, and Korea.Plants often perceived as weeds—like erect knotweed, goosefoot and marsh elder—were an important part of traditional diets for thousands of years.Major Identifying Features: Erect annual, numerous slender, wiry stems that are highly branched, forms a mat, grows up to 4-8 inches, taproot can grow down to 18 inches, bluish-green leaves, narrow blades, swollen stem nodes, white-green-pinkish flowers.

This publication has been prepared to help you identify weed plants and their seeds.This and its close relative, Prostrate Knotweed, become problems in agricultural fields, as well as waste areas and other non-crop sites, as they thrive in dry, compacted soils.These include erect knotweed (not to be confused with its invasive cousin, Asian knotweed), goosefoot, little barley, marsh elder, and maygrass.

Erect knotweed can be harvested by pulling up the plants by the roots and shaking or stripping off the fruits.Fig.3 Erect knotweed dimorphic achenes, perianth removed or not preserved. a Modern erect knotweed tubercled morph with diagnostic striate-tubercled.Fruit: The tepals persist in fruit, tightly wrapping the single seed and remaining erect to ascending at maturity.Knotweed leaves differ in the type of hairs found on their surfaces.Join our friendly community that shares tips and ideas for gardens, along with seeds and plants.

Germination heteromorphism is the quintessential and most well understood bet-hedging strategy.

Several paleoethnobotanical assemblages from the later part of this era (ca. 1000-600 BP) contain achenes that are outside the range of natural variation for erect knotweed.It was once cultivated for food by Native Americans as part of the group of crops known as the Eastern Agricultural Complex.

Growing the lost crops of eastern North... (PDF Download

CBC Radio - Plants often perceived as weeds—like erect

Farmers relaxed selective pressures that maintained dormancy in erect.

Two of these developed in what is now the southwestern United States.

Archaeology: Ancient seeds, pollen show Ohio's 'lost crops

Carbonization, differential preservation, and sampling biases in domestication studies: An erect knotweed ( Polygonum erectum L.) case study.

Masses of erect knotweed achenes are often recovered from archaeological sites in eastern North America dating to ca. 3000-600 BP.Smartweed (Polygoneaceae) Family Knotweed Species-Group Erect Knotweed (Polygonum erectum) Prostrate Knotweed (Polygonum aviculare).

Chenopod is part of the pre-maize quartet of starchy crop seeds, including maygrass, little barley, and erect knotweed.






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