White Mexican Poppy (Argemone ochroleuce) family Papaveraceae
A cosmopolitan weed native to Mexico , it is a blue-green spiny plant growing up to 1m (3’) in height.
It is found in all soil types and helps to keep erosion at bay.
Plants contain a milky latex and toxic alkaloids which make them unpalatable to animals.
When the plant or leaves are crushed, it exudes a bad odour but certain butterflies find it useful for nectar gathering.