Plant Care Black Walnut

Black Walnut

Also known as

Eastern american black walnut

Taxonomy

Juglans nigra
Juglans
Juglandaceae
Fagales

How to care for Black Walnut

💦 Water

How often to water your Black Walnut

Water needs for Black Walnut
0.5 cups
every 9

Black Walnut 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 Black Walnut

Water 0.5 cups every
9

Does your plant get direct sunlight?

Select the pot size

5"
☀️ Light

Finding light for Black Walnut in your home

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

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

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

Black Walnut does not tolerate low-light 🚫.

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

🪴 Nutrients

How to fertilize Black Walnut

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

💡 FAQs
⭐ Difficulty Level

Black Walnut is generally easy to care for, though some plant parents report facing challenges with growing it. Check out the reviews down below to read more about their experiences!

Benefits of Growing Black Walnut →

Common Black Walnut Problems →


💦 Water Needs

Black Walnut 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 Walnut Water Frequency →

Black Walnut Root Rot →


☀️ Sunlight Needs

Black Walnut 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 🏡.

Black Walnut Light Requirements →

Black Walnut Direct Sunlight Needs & Tolerance →


🐶 🐈 👶 Toxicity

Black Walnut is not safe to consume. 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. If you have children, cats, or dogs in the home, we suggest keeping this plant out of reach.


🪴 Soil

Black Walnut 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!

When and How to Successfully Repot Black Walnut →


💩 Fertilizer

Black Walnut should be repotted after it doubles in size or once a year, whichever comes first. Fresh potting soil has all the nutrients your plant needs, so as long as it’s refreshed yearly, you shouldn’t need to use fertilizer. Remember, plants get their energy from sunlight, not fertilizer!

How Much and When to Fertilize Black Walnut →


⬆️ ⬇️ Growth Pattern

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

How and When to Prune Black Walnut →


🌦️ Growing Outdoors

USDA Hardiness Zone
Black Walnut can be grown outdoors in USDA Hardiness Zones 4a-9b. Find your local hardiness zone here.

Black Walnut Temperature Tolerance →


🌱 Propagation

The seeds of Black Walnut 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 Black Walnut

Black Walnut

Black Walnut


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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