Troubleshooting
Pak Choi problems — and how to fix them
Pak Choi (Brassica rapa subsp. chinensis) is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Bolting
The biggest problem: heat, drought or long summer days send plants to flower before the rosette matures. Sow in spring or late summer, keep cool and moist, and harvest young.
Flea beetles
Beetles pepper the tender leaves with small holes, worst on seedlings in dry weather. Cover with fine mesh, keep soil moist, and sow into warm conditions for fast growth.
Slugs and snails
These pests love the soft, juicy leaves and can shred seedlings overnight. Use barriers, traps or wildlife-safe controls and clear hiding places near the bed.
Cabbage white caterpillars
Caterpillars chew the leaves in summer. Net the crop with fine insect mesh and remove eggs and larvae from leaf undersides by hand.
Prevent pak choi problems before they start
Most pak choi issues are care-mismatch, not bad luck. Dial in the basics:
Looking for pak choi in general rather than its problems? Read the full pak choi care guide — light, water, soil and feeding.
Pak Choi problems — FAQ
Why is my pak choi bolting?
The biggest problem: heat, drought or long summer days send plants to flower before the rosette matures. Sow in spring or late summer, keep cool and moist, and harvest young.
Why is my pak choi flea beetles?
Beetles pepper the tender leaves with small holes, worst on seedlings in dry weather. Cover with fine mesh, keep soil moist, and sow into warm conditions for fast growth.
Why is my pak choi slugs and snails?
These pests love the soft, juicy leaves and can shred seedlings overnight. Use barriers, traps or wildlife-safe controls and clear hiding places near the bed.
Why is my pak choi cabbage white caterpillars?
Caterpillars chew the leaves in summer. Net the crop with fine insect mesh and remove eggs and larvae from leaf undersides by hand.