As part of the Cromarty Firth Invasives project funded through RAFTS and the SEPA restoration fund, Japanese knotweed treatment continued into October. This is the best time to treat knotweed, as the plants are preparing for winter dormancy they take the herbicide they are treated with down into their root system more effectively. Stands were treated either by spraying or by injecting herbicide directly into their stems.
Knotweed stem injection
