It is native to Europe and Libya and is an introduced species to parts of the Americas and Oceania.

[2] P. strigosa is also found on the northern and western coasts of Metropolitan France.

[7] It is also native to the Netherlands, Sweden, Italy, Denmark, Germany, Belgium, Spain, Portugal, Luxembourg, Slovenia, Croatia, and Monaco.

[4] It is a non-native species to California, residing in the North Coast region, notably in Humboldt Bay.

[9] P. strigosa is present on the west coast of North America to British Columbia[9] and is found in central and southern Chile.