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Chicory / Radicchio

Cichorium intybus

INTRODUCTION

There are three types of Chicory, but the Radicchio type, also known as Italian Chicory, looks and is produced in a similar way to lettuce.

Radicchio is generally produced during summer and autumn outdoors but can be harvested during winter and spring with the protection of a greenhouse or polytunnel.

Radicchio, grown for its bitter and spicy foliage, is a perennial crop but is best treated as an annual. It can be harvested as whole-head or treated as a cut-and-come-again baby leaf.

Soil Preparation

Radicchio is not a fussy crop.

The growing site should be in a sunny position with organic material added well in advance of planting out.

The ground should be light, fertile, free-draining but moisture-retentive and stone-free.

Some shade is acceptable in the height of summer.

As an alternative, radicchio can be produced very successfully in large containers filled with compost.

Sowing & Planting

Do not be tempted to sow radicchio too early in the season, as the plant may bolt prematurely and run to flower rather than produce leaf.

Although sowing can be made directly into the growing position, it is better to sow into modules and pots and grow on for later transplanting.

Start sowing in April and repeat as needed until July. Sow little and often.

If sowing into modules, plants can be transplanted straight from the container, if sowing in seed trays or pots, prick out into larger modules first.

Harden plants before transplanting.

Plant out as soon as the weather permits, providing cloche cover if necessary.

Growing & General Cultivation

Keep well-watered during hot weather, radicchio will not appreciate drought conditions. Mulch the crop to help retain moisture.

Ensure the crop is kept weed-free and take care when hoeing not to damage the developing roots.

If the ground has been previously well-manured, further feeding should not be necessary.

Pests & Diseases

Slugs and Snails can be a problem for young plants - for remedies - see the product directory.

Diseases such as Downy mildew which shows as yellow patches on foliage and affected leaves should be removed. To prevent, ensure good air circulation and low humidity.

Botrytis can result in humid conditions, especially during autumn. Try to keep foliage well-ventilated and dry.