Plant Care Black Mustard

Black Mustard

Also known as

Wild mustard

Taxonomy

Brassica nigra
Brassica
Brassicaceae
Brassicales

How to care for Black Mustard

💦 Water

How often to water your Black Mustard

Water needs for Black Mustard
0.5 cups
every 9

Black 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.

Water 0.5 cups every
9

Does your plant get direct sunlight?

Select the pot size

5"
☀️ Light

Finding light for Black Mustard in your home

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

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

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

Black Mustard does not tolerate low-light 🚫.

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

🪴 Nutrients

How to fertilize Black Mustard

Nutrient, fertilizer, and repotting needs for Black 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 Black Mustard after it doubles in size or once a year—whichever comes first.

💡 FAQs
⭐ Difficulty Level

Black Mustard can be challenging to care for, according to some plant parents. Check out the reviews down below to learn from their experiences!

Common Black Mustard Problems →


💦 Water Needs

Black 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.

Black Mustard Root Rot →


☀️ Sunlight Needs

Black 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 🏡.


🐶 🐈 👶 Toxicity

Black Mustard is extremely dangerous if consumed. If you, a family member, or a pet has ingested any amount of plant material contact Poison Control, US (800) 222-1222, or your veterinarian immediately. Black Mustard is not recommended for homes with children, cats, or dogs.

Is Black Mustard Edible? →

Black Mustard Toxicity to Cats →

Black Mustard Toxicity to Dogs →

Black Mustard Toxicity to Humans →


💨 Humidity

Black 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.


🪴 Soil

Black 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!

What Are Healthy Black Mustard Roots →


💩 Fertilizer

Black 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

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


⬆️ ⬇️ Growth Pattern

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

Black Mustard Lifecycle →

Black Mustard Size Guide →


🌦️ Growing Outdoors

USDA Hardiness Zone
Black Mustard can be grown outdoors in USDA Hardiness Zones 4a-10b. Find your local hardiness zone here.

Black Mustard Hardiness Zones →

Is Black Mustard a Weed? →


🌱 Propagation

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


🍂 Yellow Leaves

Yellow leaves aren’t always a reason to panic, and can be a normal part of a plant’s life cycle. Unless brand new leaves are turning yellow or all the leaves change color at once, it’s likely just your plant shedding old leaves.

Overwatering and root rot are the most likely cause of problems in Black Mustard, since they are sensitive to wet soil. The leaves may also appear to be curling or drooping. Less often, yellow leaves are caused by underwatering, nutrient deficiencies, or pests.

Replace soggy soil with fresh, dry soil and download Greg to make sure your plant never gets overwatered again!


🧐 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 Black Mustard

Black Mustard

Black Mustard


Greg recommends:

Water

0.5 cups every 9 days

Placement

< 1ft from a window

Nutrients

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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