The original report was written by Rodney Burton and appeared in the Spring 2002 magazine Number 453 on page 34. Click here to read the original report.
| Diplotaxis muralis | Annual Wall-rocket |
| Hirschfeldia incana | Hoary Mustard |
| Hypericum hircinum | Stinking Tutsan |
| Impatiens capensis | Orange Balsam |
| Limosella aquatica | Mudwort |
| Salvia verbenaca | Wild Clary |
| Scilla autumnalis | Autumn Squill |