Growth cycle of Japanese Knotweed

Japanese knotweed is one of the most dreadful and dangerous species of plants that can be found in UK. They grow really strong really fast and their roots can penetrate as far as 3 to 7 meters. It is a really dangerous plant as it can cause damage to house foundation, drainage system and the walls. Therefore if found in any household, should be removed immediately with the help of professionals.

Growth cycle

The Japanese knotweed usually starts growing in the initial spring season and can have reached heights of about 3 meters by the time June starts.  In winters, the knotweed is dormant and looks like it has died but will be back as soon as the summers are back.

Identification of the Japanese knotweed

  • It contains a hollow stem that looks like bamboo and can grow up-to 2 meters tall.
  • Between may and june heart shaped leaves start to develop on the plant.
  • The stem is covered with leaves on it in a zig zag pattern.
  • Bunches of white flowers start to appear between july and September
  • Reddish purple shoots start to appear from the ground normally in april.


Why is it a problem so bad

Japanese knotweed can be a really problematic thing to tackle. It’s growth rate and the potential to regenerate itself makes it a cancer for the households in UK. It’s removal costs are an extra burden to the house owner which he didn’t think of. It is an extreme unforeseen circumstance that can cause a lot of problems in a person’s life.

Japanese knotweed is normally found growing in these areas

  • Gardens
  • Drains and other underground structures
  • Sidewalks and driveways
  • Retaining walls
  • Garages and greenhouses
  • Conservatories

Knotweed being such a big problem can get you into other troubles. For instance your neighbor can sue you if the knotweed from your house gets into your neighbor’s. This is where things start to get serious and the time has come to get help.

A property will get devalued to a considerable amount if Japanese knotweed is found in it. Insurance companies are never found to cover issues like knotweed. If a property is found to have a Japanese knotweed in any spot, the estate advisor makes it mandatory to get help of a professional to get knotweed removed from that property.

Japanese knotweed is a genuine problem and you should not be trying to handle it on a weekend. This is something that requires a lot of time and effort to get rid of. There are multiple websites where you can get a Japanese knotweed removal quote.