Aubrieta deltoidea aka Garden Aubrieta

Aubrieta deltoidea, also known as lilacbush, purple rock cress, and rainbow rock cress, is a mat-forming, herbaceous perennial plant that belongs to the mustard family. It is a semi-evergreen groundcover that produces vivid purple-red flowers in early spring and has dainty, grayish-green leaves. This plant is native to southeastern Europe but is grown worldwide as an ornamental plant and can sometimes escape gardens to grow wild. It grows best in zones 4a to 9b and can spread as wide as 2 feet but will not exceed a height of 1 foot. The showy inflorescence bears small flowers with four lavender to deep pink petals, and the fruit is an inflated, hairy silique up to 2 centimeters long. While it is often grown outdoors, Lilacbush is also a super rare houseplant that needs regular watering and abundant sunlight to thrive, and should be less than 3 feet from a window.