Plant Care California Black Oak

California Black Oak

About California Black Oak

California Black Oak is a super rare houseplant 🌿 that needs regular watering to thrive. They do best in long-lasting, direct light ☀️ and should be less than 1 foot from a window.

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

⚠️ California Black Oak 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. These plants are not recommended for homes with children, cats, or dogs.

Taxonomy

Quercus kelloggii
Quercus
Fagaceae
Fagales

Also known as

California black oak, black oak and Kellogg oak

How to care for California Black Oak

💦 Water

How often to water your California Black Oak

Water needs for California Black Oak
0.5 cups
every 9

California Black Oak 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 California Black Oak in your home

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

California Black Oak love being close to bright, sunny windows 😎.

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

California Black Oak does not tolerate low-light 🚫.

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

🪴 Nutrients

How to fertilize California Black Oak

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

💡 FAQs
💦 Water Needs

California Black Oak 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.


☀️ Sunlight Needs

California Black Oak 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

California Black Oak 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. California Black Oak is not recommended for homes with children, cats, or dogs.


🪴 Soil

California Black Oak 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!


💩 Fertilizer

California Black Oak 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!


⬆️ ⬇️ Growth Pattern

California Black Oak will branch off as it grows. To encourage branching, pinch off the newest growth at the tip and the stem will branch off into two.


🌦️ Growing Outdoors

USDA Hardiness Zone
California Black Oak can be grown outdoors in USDA Hardiness Zones 5a-9b. Find your local hardiness zone here.


🍂 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 California Black Oak, 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 California Black Oak

California Black Oak


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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