All Quotations and Surveys are subject to the conditions on site at the time of the visit. The survey report is prepared with due care and attention, in accordance with industry best practice and guidance. The conclusions presented in the report, represent the Japanese Knotweed Specialists best professional judgement based upon the information available and conditions existing as of the date of the report.
Site surveys are non-intrusive and rely on the visual identification of above ground growth; no excavations were undertaken at the time of survey to establish the extent of below ground JKW rhizomes or allow sampling of underlying soils.
There is a possibility that some underground roots and rhizomes may exist and not be discovered. It is unlikely that we will discover knotweed if the stems and crowns have been removed or if it has been concealed or suppressed by the mowing or cutting of grass, paving, landscape fabric, ornamental gravel, bark mulch etc.
During the winter, knotweed goes into temporary dormancy and the above ground plant material turns brown and brittle. On larger, more mature stands, the canes remain in place and provide a clear visual marker of the plant’s location, however younger or smaller canes may break off and get cleared/blown away, leaving no indication of knotweed whatsoever.
If the knotweed growth is dormant, or the survey is undertaken during the winter months, it is more possible that we may not discover the presence of knotweed even though it exists.
We will not be able to survey parts of the site that are inaccessible, unless they can be viewed from other areas.