When to Harvest Bok Choy — Signs, Timing & Storage

Getting the harvest moment right is the difference between a bok choy you look forward to eating and one you wish you had picked a week earlier — or a week later. Pick too early and you lose size and flavour; pick too late and you lose texture, sweetness and storage life. This guide covers the signs to look for, the right way to pick without damaging the plant, the best time of day to harvest, how often to pick, what happens if you leave the crop too long, and how to store it once it is in.

Bok choy is the crunchiest leafy green in the garden, and its harvest is a choice between two good options: pick the outer leaves one at a time for months, or cut the whole head when it is full and crisp. Either way, the signs are in the firmness of the base, the gloss of the leaves, and the absence of a flower stalk — bok choy that has started to bolt is bok choy you have waited too long for.

Bok Choy at a glance

Growing factor What bok choy need
Days to maturity 45–60
Category vegetable
Family Brassicaceae
Cold tolerance hardy
Water needs moderate

The figures above come from our crop data, which draws on standard public horticultural references. They are broad published ranges, not exact figures — the real timing in your garden depends on your variety, your soil and your weather. Use the harvest-date calculator to work out your expected harvest date from your sowing date, and check your local extension service for dates that fit your climate.

How to tell when bok choy are ready

A bok choy head is ready when it is full and upright, with thick, crisp white or pale green stalks and glossy dark green leaves that feel firm and fresh. The base should feel solid and tight when squeezed, and the plant should be a good size for its variety — baby types are ready small, full-sized types larger. The centre should be closed and tender. Leaves that are yellowing, limp or loose, or a flower stalk rising from the centre, mean the plant is past its best.

  • Head full and upright, with thick, crisp stalks and glossy dark green leaves.
  • Base feels solid and tight when squeezed, not loose or soft.
  • Centre closed and tender, with no flower stalk rising.
  • Leaves fresh and unblemished; yellowing or limp leaves mean decline.

When to harvest bok choy

Bok choy matures in 45–60 days from sowing, with baby types ready sooner. It is a hardy, cool-season crop that bolts fast in heat, so sow in spring and late summer for autumn harvests. Check your local extension service for sowing dates, and start cutting outer leaves once the plants are well established — usually from about five weeks after sowing.

How to pick bok choy without damaging the plant

For a continuous harvest, cut the outer stalks one at a time with a sharp knife, slicing low near the base and taking the oldest first while leaving the centre to grow. For a whole-head harvest, cut the plant at soil level with a sharp knife and lift it complete. Do not pull bok choy out by the roots — cutting is cleaner and leaves the bed tidy for the next sowing. Rinse the stalks well, since soil collects at the base between the leaves.

If you are still learning the crop, our growing guide for bok choy covers the whole season from sowing to harvest, and the planting calendar for zone 5 shows the timing for a mid-range climate — adjust earlier or later for your own zone.

The best time of day to harvest

The best time to pick bok choy is in the morning, after the dew has dried but before the heat of the day builds up. In the cool of the morning the plant is full of water from the night, the leaves and stems are crisp, and the harvest is at its freshest — a bok choy picked at 8 in the morning will be noticeably crisper than one picked at 3 in the afternoon. Morning picking also means the crop goes into the kitchen or the refrigerator while it is still cool, rather than sitting in a warm basket losing moisture. Avoid picking in the heat of the day, when plants are wilted and stressed, and avoid picking when the plants are soaking wet from rain or heavy dew, since wet foliage spreads disease and wet produce spoils faster in store. If you must pick later in the day, pick in the evening shade instead, and get the harvest cooled quickly.

How often to pick bok choy

Cut outer stalks every few days, or harvest whole heads as they reach size. A planting picked leaf by leaf can produce for weeks, while whole-head harvesting clears the bed for the next sowing. Either way, do not let mature heads sit — bok choy goes from perfect to bolted quickly in warm weather.

What happens if you leave bok choy too long

Left too long, bok choy bolts — a flower stalk shoots up from the centre, the leaves turn bitter and tough, and the stalks lose their crunch. Heat is the main trigger, so a spring planting left into early summer is the most common casualty. Bolted plants are still edible when young and flowering — the buds are good in stir-fries — but the crisp head is gone.

How to store bok choy

Short-term storage

Bok choy keeps for about a week in the refrigerator in a bag, unwashed. Wash the stalks thoroughly just before cooking, since grit hides at the base.

Longer-term storage

Blanch and freeze bok choy for cooked dishes, though it loses some crunch. It is best eaten fresh, so succession sowing matters more than storage for a steady supply.

If you are growing a lot of this crop, the vegetable yield estimator helps you work out how much you are likely to harvest, so you can plan your storage — and your preserving — before the glut arrives.

Succession and continuous harvest

Sow bok choy every two to three weeks in spring and autumn for a continuous supply, since each sowing is ready in about seven weeks and bolts quickly in heat. A late-summer sowing for autumn harvest is often the best crop of the year.

Common harvesting mistakes

  • Letting mature heads sit in warm weather until they bolt.
  • Pulling plants out by the roots instead of cutting them cleanly.
  • Sowing in the heat of summer, when bok choy bolts before it heads up.

Frequently asked questions

When is bok choy ready to harvest?

When the head is full and upright with thick, crisp stalks and glossy leaves — about 45–60 days after sowing. You can also cut outer stalks from about five weeks.

Can I pick bok choy leaf by leaf?

Yes — cut the outer stalks and leave the centre growing for a continuous harvest, or cut the whole head at the base when it is full.

Why did my bok choy bolt?

Heat, or plants left too long. Bok choy is a cool-season crop — sow in spring and autumn, and harvest heads promptly when they are ready.

How long does bok choy keep after picking?

About a week in the refrigerator in a bag. Wash it thoroughly before cooking, since soil collects at the base of the stalks.

What is the difference between baby bok choy and full-size bok choy?

Baby types are simply harvested young and small, when they are at their most tender. Any bok choy can be picked young as a baby head.

Related guides