Mustard

Sinapis alba

vegetable

verifiedReviewed by the GreenScout Team

White mustard is a cool-season brassica grown for its peppery leaves and seeds. It matures quickly (30–40 days) and tolerates light frost, making it ideal for spring and fall harvests. The plant produces nutritious greens and oil-rich seeds used in condiments and cooking.

Common Problems

Select the problem your Mustard is experiencing to get a treatment guide.

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Boltingchevron_right

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Underwateringchevron_right

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Yellow Leaveschevron_right

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Wiltingchevron_right

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Slow Growthchevron_right

Care Guide

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Light

Full sun (6–8 hours minimum); tolerates partial shade in hot climates.

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Water

Keep soil consistently moist but not waterlogged; water deeply 1–2 times weekly depending on rainfall and temperature.

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Soil

Well-draining, fertile loam with pH 6.0–7.5; amend with compost or aged manure before planting.

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Fertiliser

Moderate nitrogen; apply balanced fertilizer (10–10–10) every 3–4 weeks, or use compost-enriched soil.

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Temperature

Optimal 50–70°F (10–21°C); bolts quickly above 75°F (24°C).

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Humidity

Average humidity; no special requirements. Ensure good air circulation to prevent fungal issues.

Toxicity

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Safe for all. Seeds contain glucosinolates which may cause digestive upset if consumed in very large quantities.

Common Diseases

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Common Pests

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Seasonal Care

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Resume regular watering and feeding as growth picks up.

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Peak growing season. Water and feed regularly.

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Reduce watering as growth slows. Stop heavy feeding.

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Minimal watering and feeding. Protect from frost if needed.

Frequently Asked Questions

Can I grow Mustard for both leaves and seeds?

Yes — White Mustard produces both nutritious peppery leaves and oil-rich seeds used in condiments and cooking, so you can harvest young leaves while letting some plants mature for seed.