Harman US
Radicchio variety

Indigo Radicchio

Indigo is a modern hybrid selected for uniformity, rich red color, and reliable heading. It is a practical choice for gardeners who want consistent results.

Radicchio illustration
Type
round heading, hybrid
Days to maturity
80-90
Best for
uniform crops, dependable fall production

About Indigo

Indigo is a modern F1 hybrid radicchio of the Chioggia type, bred for uniform, tightly wrapped round heads of dark red leaves with white veining. As a hybrid it is valued for consistency, good field-holding ability, and reliable heading across a range of conditions. Its flavor is the typical crisp, bitter radicchio profile.

Growing Indigo Radicchio

This hybrid is a dependable choice for fall production; sow in summer and space plants about 10 inches apart. Its vigor and uniformity make it forgiving for newer growers, though like all radicchio it colors up and sweetens best in cool weather. Harvest when heads are firm and full, and scout for aphids and slugs sheltering between the leaves.

Full growing guide

For planting dates, care, and harvest that apply to all radicchio, see the complete guide.

How to grow Radicchio

Other radicchio varieties

Variety characteristics are general guidance for US home gardens; performance varies by climate, soil, and season. Seed and plant availability differs by supplier. Page updated Aug 4, 2026.