How to Prune common cowslip?
No pruning required

common cowslip · Primula veris
Also known as: Bedlam cowslip; fairy cup; galligaskins; gaskins; herb Peter; key flower; keywort; lady's bunch of keys; lady's candlestick; lady's keys; lady's seal; luck flower; paggles; paigle; paiglewort; palseywort; paralysis; petty mullein; primerole; primet; St Peter's wort
Grow as biennials for bedding and in a container or rock garden. Favours a sheltered position in sun or partial shade
No pruning required