Indigo’ is a spreading shrub that grows up to 10-feet tall. The stems are red when young but turn reddish brown and gray as they mature. ‘Indigo’ has yellowish-white flowers that bloom in mid-June. It produces an abundant crop of fruit which ripens in September. The fruit is pale to dark blue and about ¼ inch in diameter.
‘Indigo’ can be distinguished from other blue-fruited species of dogwood by the dark-brown pith in one- and two-year-old stems. In other blue-fruited dogwoods, the pith is white.