When to Harvest Turnips — Signs, Timing & Storage

Getting the harvest moment right is the difference between a turnips 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.

Turnips are a double-value crop — the roots for the kitchen and the young leaves as greens — and the harvest is really two harvests in one. The roots are at their sweetest and most tender when they are still young, which means the gardener who waits for impressively large turnips usually ends up with woody, strong-flavoured ones instead. Pick them small, pick them often, and a modest row will feed you for weeks.

Turnips at a glance

Growing factor What turnips need
Days to maturity 40–60
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 turnips are ready

A turnip ready to eat shows a broad, rounded shoulder pushing out of the soil, with smooth skin and the variety's colouring — white below, purple or green at the top where the sun reaches it. The shoulder should feel firm and heavy for its size, and the leaves should be fresh and green. Turnips grown for autumn harvest often taste sweeter after a light frost, which converts some of their starches to sugars, so a touch of cold is a friend, not a threat, for this hardy crop. If the shoulder is cracked, or the leaves are yellowing and the plant is running to flower, the root is past its peak.

  • Shoulder about 2–3 inches across — the size of a golf ball to a small apple — for the tenderest roots.
  • Skin smooth and unblemished, with clean, even colour and no cracks or soft spots.
  • Root feels dense and firm when pressed; a light, spongy feel means it has gone woody inside.
  • Tops green and vigorous; yellowing tops or a flower stalk signal the root is declining.

When to harvest turnips

Turnips mature in 40–60 days from sowing, and the first roots are usually ready at the early end of that range. Sow in spring for early-summer roots and again in late summer for an autumn crop that sweetens after light frost. Start checking the shoulders from about five weeks after sowing, and plan to clear a spring sowing before hot weather arrives, since heat pushes turnips to bolt. For dates tuned to your area, check your local extension service — the autumn sowing window in particular varies a lot by region.

How to pick turnips without damaging the plant

Pull turnips by hand, holding the tops close to the base and lifting with a steady pull while loosening the soil with a hand fork if the ground is firm. Turnips have a taproot that can snap if you yank too hard, so ease them out rather than forcing them. Twist the tops off at the crown rather than cutting into the root, and trim the taproot tail. If you also want the greens, cut the outer leaves with scissors or a knife, taking no more than a third of the plant at a time so the root keeps growing.

If you are still learning the crop, our growing guide for turnips 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 turnips 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 turnip 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 turnips

Pick every few days, taking the largest roots first and leaving smaller ones to size up. A row picked this way stays productive for two to three weeks. At the same time, you can cut outer leaves for greens every week or so throughout the plant's life, which stretches the harvest without harming the roots as long as you leave the centre of the plant intact.

What happens if you leave turnips too long

Left too long, turnips become woody, fibrous and strongly flavoured, and the centre can turn hollow or pithy. Hot weather makes this worse and can push the plant to bolt, after which the root stops growing altogether. Oversized turnips are also more likely to split after heavy rain and to attract root pests. A turnip left in the ground is not storing itself — it is declining — so pull overgrown roots and compost them rather than hoping they improve.

How to store turnips

Short-term storage

Cut the tops off, brush off loose soil, and keep roots in a bag in the refrigerator for two to three weeks. The greens are far more perishable: use them within a few days, stored in a damp bag in the fridge.

Longer-term storage

Turnips store well for a root vegetable. Layer unwashed roots in damp sand or sawdust in a cool, dark place such as a cellar, where they can keep for several months — check them regularly and remove any that soften. They also freeze well: peel, dice, blanch briefly and pack into freezer bags for cooked dishes.

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 every two to three weeks in spring and again in late summer for autumn roots. Turnips are a classic catch crop: sow them in ground that has just been cleared of an early crop, or between slower brassicas, and they will be ready before their neighbours need the room. Thin seedlings early to about 4–6 inches apart — crowded turnips make leaves but only thin, disappointing roots.

Common harvesting mistakes

  • Waiting for giant roots — the sweetest turnips are picked at 2–3 inches across.
  • Cutting all the leaves for greens at once, which starves the root.
  • Leaving spring sowings in the ground into hot weather, when they bolt and turn woody.

Frequently asked questions

How do I know when turnips are ready to harvest?

When the shoulder at the soil line is about 2–3 inches across, firm and smooth-skinned. They mature in 40–60 days from sowing, so start checking from about five weeks.

Can I eat turnip greens as well as the root?

Yes — the young outer leaves are excellent cooked greens. Cut a few outer leaves at a time and leave the centre growing so the root keeps sizing up.

Do turnips taste better after frost?

Autumn turnips often do: a light frost sweetens them. They are a hardy crop, so a frost or two is fine, but lift the roots before the ground freezes hard.

How long do turnips keep after picking?

Two to three weeks in the refrigerator, or several months layered in damp sand in a cool, dark place. The greens should be used within a few days.

What size should I pick turnips at?

About 2–3 inches across — roughly golf-ball to small-apple size. Bigger roots are usually woodier and stronger in flavour.

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