Wild Mustard Plant Care
Sinapis pubescens subsp. indurata (Coss.) Batt.
Updated · Sources · How we source care data
Every 4–7 days
Full sun to partial shade
50–75°F
40–60%
At a glance
How do you care for Wild Mustard?
Water Wild 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.
What Is the Wild Mustard?
Wild Mustard (Sinapis pubescens subsp. indurata) belongs to the Brassicaceae family within the Sinapis genus.
Wild Mustard displays an upright, branching herb growth habit, reaching up to 2 ft tall with a spread of approximately 1.5 ft. Wild Mustard produces small yellow flowers in clusters.
Leaf size: approximately 4 inches.
How Often Should You Water a Wild Mustard?
Sinapis pubescens subsp. indurata 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 Wild Mustard Need?
Wild Mustard thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Wild Mustard Prefer?
Sinapis pubescens subsp. indurata grows best at temperatures of 50–75°F. Wild Mustard prefers humidity levels of 40–60%.
Temperature
50–75°F
Humidity
40–60%
What Soil Mix Works Best for a Wild Mustard?
Well-draining loamy soil rich in organic matter. Good drainage is essential for Wild Mustard to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Wild Mustard?
Feed Wild 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 Wild 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 Wild Mustard?
Wild Mustard can be propagated through seeds. Similar propagation techniques also apply to wild mustard plant care, which shares the same genus.
Is the Wild Mustard Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Wild 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 Wild Mustard?
Wild 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 Wild Mustard Need?
Wild Mustard grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. In cooler regions, grow Wild Mustard as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 12a
Keep exploring plants
Wild 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.
Wild 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 pubescens subsp. indurata (Coss.) Batt., family Brassicaceae (first published in Fl. Algérie 53 1888) — World Flora Online record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Wild 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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