How to Prune radish 'Escala'?
No pruning required

radish 'Escala' · Raphanus sativus 'Escala'
Grow in full sun or partial shade in light, rich soil. Sow seed at frequent intervals from early spring to late summer for successional cropping. Thin seedlings to about 3cm apart, and harvest them young as older roots can become woody. See Radish Cultivation for further information
No pruning required