Growli

Plant care

Turnip 'Market Express' (Market Express turnip) care

Brassica rapa var. rapa 'Market Express'

Also called Market Express turnip, quick-maturing turnip.

RHS H5USDA 2-9Mildly toxic to petsIndoor Tops reach 20-30 cm tall

Watering rhythm

Direct sun (at least 4-6 hours)

Keep soil consistently moist, watering whenever the surface starts to dry, often 2-3 times weekly

Light

Direct sun (at least 4-6 hours)

Soil

Light, fertile, well-drained loam

Humidity

Ambient outdoor humidity

Temp

10-20°C

Pet safety

Mildly toxic to pets

Mature size

Tops reach 20-30 cm tall

Care at a glance

Light

Most houseplants will scorch where turnip 'market express' thrives. Give it the windowsill you'd otherwise leave empty because everything else burned there. Full sun for fastest, most uniform roots; tolerates light afternoon shade in warm spells. At least 6 hours of sun keeps growth quick and prevents leggy, root-poor plants. A plant moved abruptly from low light to direct sun bleaches in 48 hours — always acclimatise over a week.

Watering

For turnip 'market express' in the ground or in a bed, aim for keep soil consistently moist, watering whenever the surface starts to dry, often 2-3 times weekly. Soak the root zone rather than misting the foliage; deep, less-frequent watering trains roots downward and produces a more drought-resilient plant by mid-season. Even moisture is key to fast, tender, mild roots; irregular watering causes splitting, woodiness, and stronger flavour. These quick-growing roots never want to check or dry out. Avoid waterlogging, which rots roots and invites disease.

Soil and pot

Turnip 'Market Express' grows best in light, fertile, well-drained loam. A loose, stone-free soil lets the round roots swell smoothly and cleanly. Neutral pH (6.0-7.5) is ideal; liming acid soil also helps deter club root. Work in compost, but avoid fresh manure, which forks the roots. A pot with a working drainage hole is non-negotiable for this species — even free-draining mix will turn soggy in a closed planter. If you love the look of a decorative pot without a hole, use it as a cachepot around an inner nursery pot you can lift out to water.

Humidity and temperature

Turnip 'Market Express' sits happiest at around Ambient outdoor humidity humidity and 10-20°C (50-68°F). A cool-season field crop unbothered by humidity levels and grown in open ground or beds. No special humidity management is needed. If you keep the room above 10 year-round and avoid placing the plant near a cold draught, a hot radiator, or an air-conditioning vent, you have already handled the two biggest indoor stressors.

Fertilising

Feed turnip 'market express' sparingly. A light feeder that crops fast. Rich pre-sowing compost is usually enough; an early dose of balanced fertiliser supports leaf and root growth. Avoid excess nitrogen, which produces lush tops and small, mild-to-the-point-of-bland roots. Skip fertiliser entirely on a stressed, recently-repotted, or actively wilting plant — fertiliser salts make damage worse, not better. Wait for a round of healthy new growth before resuming a feeding rhythm.

Common problems

Below are the issues we see most often on turnip 'market express' in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Woody or split rootsDrought, irregular watering, or harvesting too late makes roots tough and cracked. Keep moisture even and lift roots young at peak tenderness.
  • Flea beetle damageFlea beetles pepper the seedling leaves with tiny holes, checking growth. Cover with fine insect mesh from sowing and keep plants vigorously watered to grow through damage.
  • BoltingHeat or a cold check sends plants to flower instead of bulking up. Sow in cool conditions for spring and autumn crops and harvest promptly.
  • Club rootThis soil-borne brassica disease swells and distorts roots in acid, poorly drained ground. Rotate crops, improve drainage, and lime to raise pH toward neutral.

Propagation

Grown from seed sown directly where it is to crop, as turnips dislike transplanting. Sow thinly 1-2 cm deep, thinning to about 10 cm apart; succession-sow every few weeks. Seedlings emerge in 5-10 days and roots mature in roughly 35-40 days. Propagation is the cheapest, most satisfying way to expand a collection — and it doubles as insurance against losing a mature plant to an accident. Take a backup cutting once the parent is established and healthy.

Toxicity to pets

Turnip 'Market Express' is mildly toxic to pets. Brassica rapa 'Market Express' is not individually listed by the ASPCA. As a Brassica, large quantities of raw root or greens can cause gastrointestinal upset in pets, and the glucosinolates in brassicas may affect the thyroid if eaten in excess. Treat with caution and verify with a vet rather than assuming it is pet-safe. If you keep cats, dogs, or curious children in the house, weigh placement carefully — a high shelf or a hanging planter is enough for casual safety. For severe ingestion incidents, call your local vet and the ASPCA Animal Poison Control Center (in the US, 888-426-4435).

Pet-safety status is sourced from the ASPCA Toxic and Non-Toxic Plant List, which catalogues the most-asked-about plants for cats, dogs, and horses.

Turnip 'Market Express' care — frequently asked questions

What is the common name for Brassica rapa var. rapa 'Market Express'?

Brassica rapa var. rapa 'Market Express' is most commonly called Turnip 'Market Express', but it is also known as Market Express turnip, quick-maturing turnip. The names refer to the same species, so care instructions for Turnip 'Market Express' apply identically to anything sold as Market Express turnip.

How much light does turnip 'market express' need?

Turnip 'Market Express' grows best in direct sun (at least 4-6 hours). Full sun for fastest, most uniform roots; tolerates light afternoon shade in warm spells. At least 6 hours of sun keeps growth quick and prevents leggy, root-poor plants.

How often should I water turnip 'market express'?

Water turnip 'market express' keep soil consistently moist, watering whenever the surface starts to dry, often 2-3 times weekly. Even moisture is key to fast, tender, mild roots; irregular watering causes splitting, woodiness, and stronger flavour. These quick-growing roots never want to check or dry out. Avoid waterlogging, which rots roots and invites disease. The finger-test (or lifting the pot to feel its weight) beats a fixed weekly calendar because pot size, light, and season all change how fast the soil dries.

Is turnip 'market express' toxic to cats and dogs?

Turnip 'Market Express' is mildly toxic to pets. Brassica rapa 'Market Express' is not individually listed by the ASPCA. As a Brassica, large quantities of raw root or greens can cause gastrointestinal upset in pets, and the glucosinolates in brassicas may affect the thyroid if eaten in excess. Treat with caution and verify with a vet rather than assuming it is pet-safe.

What USDA hardiness zone does turnip 'market express' grow in?

Turnip 'Market Express' is rated for USDA zone 2-9 (cool-season annual) and RHS hardiness H5. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Turnip 'Market Express' deep-dive guides

Every aspect of turnip 'market express' care, each with its own calibrated guide:

Related guides

Turnip 'Market Express' is also commonly called Market Express turnip or quick-maturing turnip.