Plant Care Field Mustard

Field Mustard

About Field Mustard

Field Mustard is a relatively rare houseplant 🌿 that is easy to grow and needs regular watering to thrive. They do best in long-lasting, direct light ☀️ and should be less than 1 foot from a window.

Field Mustard likes soil that is well draining. Your plant shouldn't need added fertilizers if you repot each time it doubles in size.

Field Mustard belongs to the Brassica genus, and is native to China.


Brassica rapa

Also known as

Choy sum, Napa cabbage, Pak choi, Yellow sarson, Komatsuna, Turnip, Purple top turnip, Hakurei and Tatsoi

How to care for Field Mustard

💦 Water

How often to water your Field Mustard

Water needs for Field Mustard
0.5 cups
every 9

Field Mustard needs 0.5 cups of water every 9 when it doesn’t get direct sunlight and is potted in a 5" pot.

Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.

Calculate water needs of Field Mustard

Water 0.5 cups every

Does your plant get direct sunlight?

Select the pot size

☀️ Light

Finding light for Field Mustard in your home

Light needs and placement for plant Field Mustard: 1ft from a window
1ft or less from
a window

Field Mustard love being close to bright, sunny windows 😎.

Place it less than 1ft from a south-facing window to maximize the potential for growth.

Field Mustard does not tolerate low-light 🚫.

Select your region to see how the current weather in your area affects the placement of Field Mustard in your home 🏡.

🪴 Nutrients

How to fertilize Field Mustard

Nutrient, fertilizer, and repotting needs for Field Mustard: repot after 2X growth

Most potting soils come with ample nutrients which plants use to produce new growth.

By the time your plant has depleted the nutrients in its soil it’s likely grown enough to need a larger pot anyway.

To replenish this plant's nutrients, repot your Field Mustard after it doubles in size or once a year—whichever comes first.

💡 FAQs
⭐ Difficulty Level

Field Mustard is generally considered an easy-to-care-for plant and makes a great choice for beginners!

Benefits of Growing Field Mustard →

Common Field Mustard Problems →

💦 Water Needs

Field Mustard prefers for the soil to dry out between waterings and should be watered regularly. Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.

Field Mustard Water Frequency →

Field Mustard Root Rot →

☀️ Sunlight Needs

Field Mustard requires abundant, bright and direct light. Place it less than one foot from a window to ensure it receives enough light to survive 💪. Select your region to see how the current weather in your area affects the placement in your home 🏡.

Field Mustard Light Requirements →

Field Mustard Direct Sunlight Needs & Tolerance →

🐶 🐈 👶 Toxicity

Greg does not have confirmed data on this plant’s toxicity. If you, a family member, or a pet consumes plant material of unknown toxicity, it’s always best to consult a medical professional.

If you or someone else ingested this plant, call Poison Control at US (800) 222-1222. If a pet consumed this plant, contact your veterinarian or the ASPCA at US (888) 426-4435.

💨 Humidity

Field Mustard doesn’t require additional humidity. Plants absorb most water through their root system rather than their leaves, so the best way to provide humidity for your plants is through watering the soil.

Field Mustard Humidity Needs →

🪴 Soil

Field Mustard does best in well-draining soil. A good soil will contain lots of organic matter such as coco coir as well as perlite or vermiculite to help with drainage. Adding a handful of perlite to regular store-bought potting soil should do the trick!

Best Soil Mix for Field Mustard →

When and How to Successfully Repot Field Mustard →

💩 Fertilizer

Field Mustard grows very slowly and doesn’t require added fertilizer. Replacing your plant’s potting soil once a year should provide them with more than enough nutrition. Remember, plants get their energy from sunlight, not fertilizer!

🌎 Native Region

Field Mustard is native to Western Europe, the Mediterranean, and temperate Asia.

⬆️ ⬇️ Growth Pattern

Field Mustard grows vertically and new growth will emerge from the top of the plant.

How and When to Prune Field Mustard →

🌦️ Growing Outdoors

USDA Hardiness Zone
Field Mustard can be grown outdoors in USDA Hardiness Zones 2a-10b. Find your local hardiness zone here.

Field Mustard Temperature Tolerance →

🌱 Propagation

The seeds of Field Mustard can be used to grow new plants! After your plant flowers, any seeds that formed can be collected and germinated in potting soil.

🧐 Troubleshooting

When troubleshooting a sad-looking houseplant, start by checking for signs of distress in its leaves, such as yellowing, browning, or drooping, which can indicate overwatering or nutrient deficiencies.

Inspect the soil moisture; too dry or too wet soil can cause problems.

Ensure the plant is getting the right amount of light, as too much or too little can stress it.

Finally, consider environmental factors like temperature and humidity, and adjust care routines accordingly to revive your plant.

Care Summary for Field Mustard

Field Mustard

Field Mustard

Greg recommends:


0.5 cups every 9 days


< 1ft from a window


Repot after 2x growth

Based on the 4” pot your plant is in, and that it doesn’t get direct sunlight.

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