How to prune bok choy 'black summer'

Harvest outer leaves from 4–5 weeks after transplanting; full head at 50–60 days. For cut-and-come-again harvesting, snap or cut outer leaves cleanly at the base, leaving the central growing point intact. For a full harvest, cut the entire plant 1 inch above the soil — it may resprout once.

As needed (ongoing harvest rather than pruning). Bok Choy 'Black Summer' is a fast-maturing leafy vegetable, not a plant you prune in the traditional sense. Harvest outer leaves continuously to extend the picking window, or cut the whole head at the base when mature. Once it bolts (flowers), the growing season is over — harvest immediately.

For cut-and-come-again harvesting, snap or cut outer leaves cleanly at the base, leaving the central growing point intact. For a full harvest, cut the entire plant 1 inch above the soil — it may resprout once.