Plant Care Blackjack Oak

Blackjack Oak

About Blackjack Oak

Blackjack Oak is a super 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.

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

Blackjack Oak belongs to the Quercus genus, and is native to the Central and Eastern United States.

⚠️ Blackjack Oak 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.


Quercus marilandica

How to care for Blackjack Oak


How often to water your Blackjack Oak

Water needs for Blackjack Oak
0.5 cups
every 9

Blackjack 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

Does your plant get direct sunlight?

Select the pot size


Check the growing potential in your area

A plant's growing potential is determined from its location, the time of year, and current local weather.

Select a city to check sunlight intensity

Finding light for Blackjack Oak in your home

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

Blackjack Oak love being close to bright, sunny windows 😎.

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

Blackjack Oak does not tolerate low-light 🚫.

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


How to fertilize Blackjack Oak

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

Difficulty Level

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

Water Needs
Sunlight Needs
Growth Pattern
Growing Outdoors

Care Summary for Blackjack Oak

Blackjack Oak

Blackjack Oak

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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