bluish rock cress

Bluish rock cress, scientifically known as Arabis caerulea, is an alpine perennial plant belonging to the mustard family (Brassicaceae). It typically grows to about 10 cm (4 inches) in height and features pale purple flowers. Rock cresses, in general, are herbs often found in the Northern Hemisphere and mountainous regions of Africa. They are characterized by their long, narrow seedpods called siliques. Some species are cultivated for their attractive flowers, which can be white, pink, or purple. While the term "rock cress" can refer to various species, Arabis caerulea is specifically the bluish rock cress.1