Still not sure what’s growing?

As well as helping clients deal with Japanese Knotweed, we also treat other invasive species and general nuisance weeds. There are a large number of non-native and also native plants, in the UK, which are known to be invasive. Other invasive weeds can cause environmental damage and tend to be, one of the biggest threats to native plants and animals.

Below, you can find information on some of the invasive species that we can help you with.  If you have an overgrown garden area or green space surrounding your property, please feel free to get in touch.  We can assist with all of these problems.

Himalayan Balsam

At around 2 metres tall, it is a very attractive plant, normally found along watercourses, grows in dense patches, and if left untreated it can take over large areas of ground within a few years.  Out-competes most other vegetation.


An attractive large evergreen shrub, with a large pink flower, that severely impacts the biodiversity of an area by reducing numbers of worms, birds and other plants.  Can also impact the regenerative ability of a site.

Horse Tail

Known as Horse tail or Cwt-y-Cadno (welsh). Although native to the British Isles, it is becoming more of a nuisance due to the damage it can cause to concrete or asphalt.  It is an annual plant and can grow up to 1.5 metres.


Seen on almost every waste patch of land.  The easily spread seeds have resulted in large-scale populations, the shrub will out-compete native vegetation.  The plant can damage walls as the wind-blown seeds germinate in mortar.

Japanese Knotweed

Often found in dense clumps, zig-zag purple speckled stems, and a striking green colour.  Spreads easily when disturbed, and can be difficult to eradicate when treated incorrectly.  Can cause difficulties with obtaining mortgages.

Giant Hogweed

Easily identified due to its sheer size.  It can grow up to 5 metres tall! It’s common in hedgerows. If you do see this species, please take care, as contact with the sap can cause severe blistering of the skin.