Below is the Story of Mary Lyden who's Knotweed story turned sour.

Click on the image to see the full article.

Current News

Our systems to convert Japanese Knotweed Excavation materials to inert materials is now an Approved Patent.

The Reduced Dig Systems for Japanese Knotweed is now Patent Pending.

At present Caledonia is developing the Vaporising System. This system will enable you to excavate Japanese Knotweed areas and dispose off to Inert landfill sites in one day or use the materials on site as a mound of embankment.

New Services

Spraying of Japanese Knotweed and Giant Hogweed.

One Day Training Course available.

Excavation Works Services available.