How to Prune garlic mustard?
No pruning required

garlic mustard · Alliaria petiolata
Also known as: Jack-by-the-hedge; garlic root; garlic wort; hedge garlic; hedge mustard; poor man's mustard; sauce-alone
Prefers a rich damp alluvial soil, thriving in damp shady places where few other herbs will grow. A good woodland-edge and hedgerow plant, the plant emits a strong smell of garlic which is especially pronounced if the leaves are bruised. This species is an important food source for the orange-tip and green-veined-white butterflies
No pruning required