Plants have stems to 1 metre long and sometimes climb. The leaves are pinnatisect. Inflorescences comprise up to 20 purple-tipped white to cream flowers that appear in spring and summer. These gradually become pink after pollination.
Unlike other Fumaria species which are known as weeds of crops and agricultural areas, Fumaria capreolata can become naturalised in areas of natural vegetation and smother low-growing plants, becoming an environmental weed.