Common milkweek is banned in the UK and I think the EU, due to the risk it can overwhelm native habitats. https://www.gov.uk/guidance/invasive-non-native-alie

Common milkweek is banned in the UK and I think the EU, due to the risk it can overwhelm native habitats. https://www.gov.uk/guidance/invasive-non-native-alien-plant-species-rules-in-england-and-wales#list-of-invasive-plant-species https://www.gov.uk/guidance/invasive-non-native-alien-plant-... https://circabc.europa.eu/sd/a/8dbd637b-6d8b-4608-b2b1-b51dd21cacde/Asclepias%20syriaca%20RA.pdf https://circabc.europa.eu/sd/a/8dbd637b-6d8b-4608-b2b1-b51dd...