White Mustard Plant Care
Sinapis alba L.
Updated · Sources · How we source care data
White mustard, also called yellow mustard, is an annual plant of the cabbage family. It is sometimes also referred to as Brassica alba or B.
Every 4–7 days
Full sun to partial shade
50–75°F
40–60%
At a glance
How do you care for White Mustard?
Water White Mustard every 4–7 days, letting the top layer of soil dry out between waterings, and give it full sun to partial shade. It prefers temperatures of 50–75°F (10–24°C) and 40–60% humidity. Fertilize it every 3 months during the growing season.
Where Is the White Mustard Native To?
- Albania
- Algeria
- Austria
- Bangladesh
- Belarus
- Belgium
- Bhutan
- Bosnia and Herzegovina
- Brunei
- Bulgaria
- Cambodia
- Croatia
- Cyprus
- Czechia
- Denmark
- Egypt
- Estonia
- Finland
- France
- Germany
- Greece
- Hungary
- Iceland
- India
- Indonesia
- Ireland
- Israel
- Italy
- Laos
- Latvia
- Lebanon
- Libya
- Lithuania
- Luxembourg
- Malaysia
- Maldives
- Malta
- Moldova
- Montenegro
- Morocco
- Myanmar
- Nepal
- North Macedonia
- Norway
- Pakistan
- Philippines
- Poland
- Portugal
- Romania
- Russia
- Serbia
- Singapore
- Slovakia
- Slovenia
- Spain
- Sri Lanka
- Sweden
- Switzerland
- Syria
- Thailand
- The Netherlands
- Timor-Leste
- Tunisia
- Türkiye
- Ukraine
- United Kingdom
- Vietnam
What Is the White Mustard?
White Mustard (Sinapis alba) belongs to the Brassicaceae family within the Sinapis genus. White Mustard is native to the Mediterranean region, Europe and Tropical Asia. White Mustard is also known as Yellow Mustard, Field Mustard, Charlock.
White Mustard displays an upright, branching herb growth habit, reaching up to 2 ft tall with a spread of approximately 1.5 ft. White Mustard produces small yellow flowers in clusters.
Leaf size: approximately 4 inches.
How Often Should You Water a White Mustard?
Sinapis alba requires watering every 4–7 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.
Watering Frequency
Every 4–7 days
Let soil partially dry between waterings
What Light Does the White Mustard Need?
White Mustard thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the White Mustard Prefer?
Sinapis alba grows best at temperatures of 50–75°F. White Mustard prefers humidity levels of 40–60%.
Temperature
50–75°F
Humidity
40–60%
What Soil Mix Works Best for a White Mustard?
Well-draining loamy soil rich in organic matter. Good drainage is essential for White Mustard to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a White Mustard?
Feed White Mustard every 3 months during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.
Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.
Fertilizing
Every 3 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a White Mustard?
Annually in early spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.
How Do You Propagate a White Mustard?
White Mustard can be propagated through seeds. Similar propagation techniques also apply to wild mustard plant care, which shares the same genus.
Is the White Mustard Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list White 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 White Mustard?
White Mustard is susceptible to cabbage worms, flea beetles, aphids. 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 White Mustard Need?
White Mustard grows outdoors in USDA Zone 6a – 9b. It survives winters down to planting zone 6a. White Mustard is native to the Mediterranean region, Europe and Tropical Asia.
Hardiness Zone
Zone 6a – 9b
Keep exploring plants
White 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 Sinapis genus — compare its care with other Sinapis species on PlantoScan.
Sinapis is part of the Brassicaceae plant family — browse all Brassicaceae genera and species.
White 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: Sinapis alba L., family Brassicaceae (first published in Sp. Pl. : 668 (1753)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list White 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 6a – 9b, estimated from the plant's typical growing conditions.
- 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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