Hi is deisal as good to kill Jap knotweed. Will it kill anything else near it
LP
No. Non, Nein, Nej
It is illegal to deliberately contaminate the soil with:
1 Diesel
2 Salt
3 Bleach.
All very good weed killers and insecticides but if you are caught doing it, expect fines and imprisonment, especially if you are contaminating somebody else’s land.