As far as I can tell, in the US they are only considered invasive in Oregon and Alaska. Invasive is a separate definition from non-native. An invasive(native or

As far as I can tell, in the US they are only considered invasive in Oregon and Alaska. Invasive is a separate definition from non-native. An invasive(native or non-native) has to be a threat to the established ecosystem, which dandelions generally aren't.