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

flat-stalked garlic · Allium nutans
Grow in moist but well-drained, reasonably fertile soil in full sun. Happy in moist soils, unlike most allium species. See allium cultivation for further advice
No pruning required, other than to remove old flowered stems and foliage