How to prune kai-lan (gai lan)

Harvest main shoot at 50–60 days when flower buds are tight and beginning to show; side shoots in succession afterward. Cut the central stem 4–6 inches long with a sharp knife, just above a leaf node. Side shoots will emerge and should be harvested at a similar stage with tight buds. Repeat over 3–4 weeks. Remove any fully open flowers to keep remaining shoots tender.

Every few days once the main shoot is harvested. Kai-lan (Gai Lan) is managed by cutting the central flowering shoot before flowers fully open, which promotes multiple tender side shoots. This edible brassica thrives with frequent harvest cuts rather than ornamental pruning. Consistent cutting extends production over several weeks. No structural pruning is needed — it is an annual or biennial vegetable crop.

Cut the central stem 4–6 inches long with a sharp knife, just above a leaf node. Side shoots will emerge and should be harvested at a similar stage with tight buds. Repeat over 3–4 weeks. Remove any fully open flowers to keep remaining shoots tender.