Kyushu Murakami Hokkaido
Europe Europe Europe Europe
Japanese knotweed No Suitability No/Low Suitability Low/Medium Suitability
Bohemian knotweed No Suitability No Suitability Low/Medium Suitability
Giant knotweed No Suitability No Suitability Low/Medium Suitability
All North American Records All North American Records All North American Records All North American Records
Japanese knotweed* No Suitability* High Suitability* Medium/High Suitability*
Bohemian knotweed No/Low Suitability Medium/High Suitability Low/Medium Suitability
Giant knotweed No Suitability Medium/High Suitability Medium/High Suitability