Purple Mustard Plant Care

Chorispora tenella DC.

Updated · Sources · How we source care data

Chorispora tenella is a species of flowering plant in the mustard family known by several common names, including purple mustard, blue mustard, musk mustard, and crossflower. This mustard is native to parts of Eurasia but is well known in other parts of the world, particularly in temperate regions, as an introduced species and a noxious weed.

🌱Herbs
Water

Every 7–10 days

Light

Full sun to partial shade

Temp

50–80°F

Humidity

40–60%

At a glance

How do you care for Purple Mustard?

Plant Purple Mustard in full sun to partial shade (USDA zones 12a) and water a young shrub every 7–10 days until it is established. It tolerates temperatures of 50–80°F (10–27°C). Fertilize it every 6 months during the growing season.

What Is the Purple Mustard?

Purple Mustard (Chorispora tenella) belongs to the Brassicaceae family within the Chorispora genus. Purple Mustard is native to parts of Eurasia. Purple Mustard is also known as Field Mustard, Wild Mustard.

Purple Mustard displays a low rosette, spreading growth habit, reaching up to 0.5 ft tall with a spread of approximately 1 ft. Purple Mustard produces small purple or pink flowers in clusters.

Leaf size: approximately 2 inches.

How Often Should You Water a Purple Mustard?

Water a young or newly planted Purple Mustard every 7–10 days, soaking the whole root zone, until it is established — usually one to two growing seasons. Established shrubs mainly need water during long dry spells. In a container, water whenever the top few centimetres of soil are dry.

Watering Frequency

Every 7–10 days

Until established; then in dry spells

What Light Does the Purple Mustard Need?

Purple Mustard thrives in full sun to partial shade.

Light Requirement

Full sun to partial shade

What Temperature and Humidity Does the Purple Mustard Prefer?

Chorispora tenella tolerates temperatures of 50–80°F. Purple Mustard prefers humidity levels of 40–60%.

Temperature

50–80°F

Humidity

40–60%

What Soil Mix Works Best for a Purple Mustard?

Well-draining sandy loam with added organic matter. Good drainage is essential for Purple Mustard to prevent waterlogging, which leads to root rot and fungal issues.

How Often Should You Fertilize a Purple Mustard?

Feed Purple Mustard every 6 months during the growing season with a balanced, slow-release fertilizer at the rate on the label. Established shrubs in good soil often need little extra feeding, so let weak growth or pale foliage guide you.

Stop feeding by late summer so new growth can harden before winter.

Fertilizing

Every 6 months

During the growing season

The PlantoScan app can remind you when to water and when to fertilize each plant.

Where Should You Plant a Purple Mustard?

Choose a spot with full sun to partial shade and well-draining sandy loam with added organic matter. Avoid low spots where water collects after rain.

Purple Mustard is suited to USDA Zone 12a.

Plant container-grown or balled-and-burlapped shrubs in spring or early autumn, setting the root flare at soil level, and water well after planting.

How Far Apart Should You Plant a Purple Mustard?

Purple Mustard can spread to about 1 ft (0.3 m) and reach about 1 ft (0 m) tall. Space plants about 1 ft (0.3 m) apart so mature crowns don't crowd each other, and plant at least half that distance from buildings, fences and paths.

Planning a row or hedge? Try the plant spacing calculator.

How Do You Prune a Purple Mustard?

Prune Purple Mustard while it is dormant in late winter: first remove dead, damaged and crossing branches, then thin lightly for shape.

If it flowers in spring, prune right after flowering instead so you don't remove next year's buds. Never take off more than about a quarter of the shrub in one year.

How Do You Care for a Purple Mustard in Winter?

Purple Mustard is frost-tender (hardy to USDA zone 12). In colder areas grow it in a container and move it to a bright, frost-free place before the first frost.

How Do You Propagate a Purple Mustard?

Purple Mustard can be propagated through seeds. Similar propagation techniques also apply to chorispora sabulosa plant care, which shares the same genus.

Is the Purple Mustard Toxic to Pets and Children?

Pet safety not verified

The ASPCA does not list Purple Mustard, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.

This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.

See all plants toxic to cats and plants toxic to dogs.

What Pests and Diseases Affect the Purple Mustard?

Purple Mustard is susceptible to aphids, cabbage worms, flea beetles. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.

Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.

What USDA Hardiness Zone Does the Purple Mustard Need?

Purple Mustard grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Purple Mustard is native to parts of Eurasia. In cooler regions, grow Purple Mustard as a houseplant or bring it indoors before the first frost.

Hardiness Zone

Zone 12a

Keep exploring plants

Purple Mustard is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.

It belongs to the Chorispora genus — compare its care with other Chorispora species on PlantoScan.

Chorispora is part of the Brassicaceae plant family — browse all Brassicaceae genera and species.

Purple Mustard thrives in bright light and direct sun — see other bright-light plants.

Related Plant Care Guides

Closely related plants with similar care requirements:

Sources

  • Scientific name & taxonomy: Chorispora tenella DC., family Brassicaceae (first published in Syst. Nat. 2: 435 (1821)) — World Flora Online record, IPNI name record.
  • Pet toxicity: Pet safety not verified: the ASPCA does not list Purple Mustard, so we can't confirm whether it is safe for cats and dogs. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
  • Hardiness zone: USDA Zone 12a, calculated from the plant's minimum temperature.
  • Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.

Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.

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