Mature size & growth rate

How big does Turnip 'Hakurei' (Brassica rapa var. rapa 'Hakurei') get?

Also called Hakurei turnip, Japanese salad turnip, white salad turnip.

More about turnip 'hakurei'

About Turnip 'Hakurei'

Brassica rapa var. rapa 'Hakurei' · also called Hakurei turnip, Japanese salad turnip · edible

'Hakurei' is a premium F1 Japanese salad turnip with smooth, pure-white roots that are sweet, crisp and mild enough to eat raw like fruit. Fast to mature in about 38-50 days, both roots and tender greens are prized. Bolt-tolerant and refined in flavour, it is sown direct in full sun in cool spring or autumn weather.

Mature size: Roots 4-6 cm across; foliage 25-35 cm tall.

Watch for — Flea beetle: Shotgun holes in seedling leaves slow the rapid growth Hakurei relies on; protect with fine mesh from sowing and keep plants watered.

Indoor size vs how big it gets in the wild

Turnip 'Hakurei' reaches its full size within one growing season — there is no "long-term" size, just how big it gets before you harvest or it dies back. Indoors and in a pot, expect roots 4-6 cm across. In the ground with no restriction it is a completely different plant — foliage 25-35 cm tall. — which is why the pot, the light and the pruning matter so much for the size you actually end up with.

It sizes up fast and once, racing from seedling to full size in a single season; after cropping it is finished, so size is a within-season question.

Growth rate and years to mature

Turnip 'Hakurei' is a fast grower. Realistically, expect a single growing season — it reaches full size in one year, then is done. Its feeding profile backs this up: moderate feeder. fertile, compost-enriched soil drives its quick growth; a balanced early feed helps. avoid excess nitrogen, which produces lush tops but softer, disease-prone roots.

Want this turned into the right next pot at the right moment? The pot size calculator and the turnip 'hakurei' repotting guide cover when and how much to size up — pot size is one of the biggest levers on how fast turnip 'hakurei' grows.

How to keep turnip 'hakurei' smaller

You are not stuck with the maximum size. For turnip 'hakurei' specifically, these are the levers, in order of impact:

Choose a compact or dwarf variety of turnip 'hakurei' from the start — that is the most reliable size control for an annual.
Grow it in a smaller container to naturally limit how large it gets.
For some crops, pinching or pruning the growing tips keeps the plant shorter and bushier.
Sow a little later or space plants closer if you specifically want smaller individual plants.

How to grow turnip 'hakurei' bigger or faster

If you want it to fill the space sooner, push the conditions rather than hoping — for turnip 'hakurei' the accelerators are:

Full sun, warm soil and steady water are what drive a crop to full size fastest.
Sow at the right time for your zone so it gets the whole season to size up.
Feed appropriately for the crop and never let it check (stall) from drought or cold.

Light is almost always the ceiling. The turnip 'hakurei' light requirements page covers exactly how bright a spot it needs to grow at its potential instead of stalling.

When turnip 'hakurei' outgrows the room (or the pot)

"Too big" usually arrives as one of these signs for turnip 'hakurei':

It sprawls beyond its bed or container before harvest — usually a spacing or support issue.
It flops or needs staking once it hits full height.
Once it has fruited or bolted, it is at its final size for good — the next plant is a new sowing.

If it is the pot rather than the room, it is a repotting job, not a goodbye — see the turnip 'hakurei' repotting guide. If you want more of this plant instead of a bigger one, the turnip 'hakurei' propagation guide turns prunings into new plants.

Turnip 'Hakurei' size — frequently asked questions

How big does turnip 'hakurei' get?

Turnip 'Hakurei' reaches roots 4-6 cm across when grown indoors, and far larger where it grows unrestricted (foliage 25-35 cm tall.). It sizes up fast and once, racing from seedling to full size in a single season; after cropping it is finished, so size is a within-season question.

Is turnip 'hakurei' slow or fast growing?

Turnip 'Hakurei' is a fast grower. Expect a single growing season — it reaches full size in one year, then is done. Turnip 'Hakurei' reaches its full size within one growing season — there is no "long-term" size, just how big it gets before you harvest or it dies back.

How long does turnip 'hakurei' take to reach full size?

Roughly a single growing season — it reaches full size in one year, then is done. Light, pot size and feeding move that timeline more than anything else.

How do I keep turnip 'hakurei' smaller?

Choose a compact or dwarf variety of turnip 'hakurei' from the start — that is the most reliable size control for an annual. Grow it in a smaller container to naturally limit how large it gets. For some crops, pinching or pruning the growing tips keeps the plant shorter and bushier. Sow a little later or space plants closer if you specifically want smaller individual plants.

How can I make turnip 'hakurei' grow bigger or faster?

Full sun, warm soil and steady water are what drive a crop to full size fastest. Sow at the right time for your zone so it gets the whole season to size up. Feed appropriately for the crop and never let it check (stall) from drought or cold.