Orange eye is a shrub in the Scrophulariaceae family. It is native to northwestern China and Japan. It is widely used as an ornamental plant. It can be invasive in many countries, including England, and it is classified as a noxious weed by the states of Oregon and Washington.
Orange eye is naturalized in most cities of central and southern Europe, where it can spread on wastelands and in gardens. It is appreciated for its value as food for many species of butterflies.