Where it grows
Native to Europe, south-western Asia and introduced to the US, a distribution slightly more northward than Veronica triphyllos - native to Afghanistan, Albania, Altay, Austria, Baltic States, Belarus, Belgium, Bulgaria, Central European Russia, Corsica, Czechoslovakia, Denmark, East European Russia, Finland, France, Germany, Great Britain, Greece, Hungary, Iran, Italy, Kazakhstan, Kyrgyzstan, Crimea, Morocco, Netherlands, North Caucasus, North European Russia, Northwest European Russia, Norway, Pakistan, Poland, Romania, Sardinia, Sicily, South European Russia, Spain, Sweden, Switzerland, Tajikistan, Transcaucasus, Turkey, Turkmenistan, Ukraine, Uzbekistan, West Himalaya, Xinjiang and Yugoslavia, and introduced to British Columbia, Idaho, Indiana, Massachusetts, Michigan, Minnesota, Montana, New Brunswick, New York, Newfoundland, Nova Scotia, Ontario, Oregon, Prince Edward Island, Washington, Wisconsin, and Wyoming.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.