How do you rid the garden of Chinese knotweed?

Answer 1

Harvesting the roots of Chinese Knotweed will get rid of the plant. You may have to harvest them for more than one year to erradicate it totally.

Chinese Knotweed is used as an herbal medicinal in China, and it is named He Shou Wu (processed root) or Sheng He Shou Wu (fresh, unprocessed root)

9 to 30 grams of the freshl root can be boiled in water to make a tea. This tea may be used as a laxative, or to treat carbuncles, boils, or other toxic swellings.

Processing the root by cooking it with yellow rice wine and black bean juice makes to root more useful for nourishing the body. 9 to 30 gram doses of He Shou Wu are used in combination with other herbs to maintain youth.

He Shou Wu is one of the main herbs in a formula called qi bao mei ran dan... loosely translated, that means "seven-treasure pill for beautiful whiskers". The formula is said to restore gray hair to its youthful color, and prevent premature aging.

Source: Chinese Herbal Medicine Materia Medica; 3rd Edition. Bensky, Clavey, Stoger, 2004. Special:Booksources.

Roundup applied every time it shows will eventually kill it but other plants in the area may suffer.

Answer 2

A schedule of controlled burning, extreme pruning, regular spraying, severe mowing, and tarp-guided suffocation are ways to get rid of Japanese knotweed. The stubborn invasive in question (Fallopia japonica, Polygonum cuspidatum) has to be controlled in term of above-ground shoots -- whose young stages are edible -- and below-ground rhizomatous roots. Its elimination oftentimes requires either hiring a professional service or letting goats graze the shoots and pigs the roots.

Answer 3

Controlled burns, herbicide treatments, and severe mowing are ways to get rid of Japanese stilt grass (Microstegium vimineum). The invasive in question manages to adapt to many environments -- including those of low light -- even though the Asian native cannot survive more than 1 - 3 years of coordinated burning, extreme lawn-pruning, and pre-emergent weed-killing.

Answer 4

Pre-emergent and post-emergent herbicides number among the killers of knotweed. The common knotweed in question (Polygonum arenastrum) responds to the home gardener's treatment schedules with such pre-emergent herbicides as benefin, dithiopyr, oryzalin, pendimethalin, prodiamine or trifluralin and such pre-emergent weedkillers as dicamba (in turfgrass), glyphosate, pelargonic acid or 2,4-D. Manual and mechanical removal, soil aeration, and soil compaction mitigation will eradicate knotweed and serve to discourage its re-appearance and re-establishment.

Answer 5

Controlled burns, herbicide treatments and severe mowing are ways to get rid of Japanese stilt grass. The invasive in question (Microstegium vimineum) manages to adapt to many environments, including those of low light. The Asian native nevertheless will not survive more than a year or two of coordinated burning, extreme lawn-pruning and pre-emergent weed-killing.