Roundup Biactive is a herbicide used for the control of a large variety of weeds including the Japanese knotweed.
Apply to actively growing weeds between April and November. Some weeds such as nettles have different timeframes, please refer to the manufacturers label for more information. Do not apply manure, fertiliser or pesticides to treated areas until at least 5 days after application. It may take up to 14 days to see destruction of treated weeds, do not apply more product before 14 days. Weeds should be thoroughly wetted with the spray solution but not until there is a run-off.
