How to Prune Neapolitan garlic?
No pruning required, other than to remove old flowered stems and foliage

Neapolitan garlic · Allium neapolitanum
Also known as: daffodil garlic; flowering onion; Naples garlic; scentless onion
Grow in full sun and a fertile well-drained soil. It is best to grow in containers where garden soil is heavy clay and prone to saturation over winter. See allium cultivation
No pruning required, other than to remove old flowered stems and foliage