Blackjack Oak
About Blackjack Oak
Blackjack Oak is a super rare houseplant šæ that is easy to grow and needs regular watering to thrive. They do best in long-lasting, direct light āļø 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.
ā ļø 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.
Taxonomy
Quercus marilandica
Quercus
Fagaceae
Fagales

How to care for Blackjack Oak

How often to water your Blackjack Oak

every 9
Blackjack Oak needs 0.5 cups of water every 9 when it doesnāt 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

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

a window
Blackjack Oak love being close to bright, sunny windows š.
Place it less than 1ft from a south-facing window to maximize the potential for growth.
Blackjack Oak does not tolerate low-light š«.
Select your region to see how the current weather in your area affects the placement of Blackjack Oak in your home š”.

How to fertilize Blackjack Oak

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 itās 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 yearāwhichever comes first.

Blackjack Oak is generally considered an easy-to-care-for plant and makes a great choice for beginners!
Water Needs
Blackjack 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
Blackjack Oak requires abundant, bright and direct light. Place it less than one foot from a window to ensure it receives enough light to survive šŖ. Select your region to see how the current weather in your area affects the placement in your home š”.
Toxicity
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.
Soil
Blackjack 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
Blackjack Oak grows very slowly and doesnāt require added fertilizer. Replacing your plantās potting soil once a year should provide them with more than enough nutrition. Remember, plants get their energy from sunlight, not fertilizer!
Growth Pattern
Blackjack 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
Blackjack Oak can be grown outdoors in USDA Hardiness Zones 6a-9b. Find your local hardiness zone here.
Propagation
The seeds of Blackjack Oak can be used to grow new plants! After your plant flowers, any seeds that formed can be collected and germinated in potting soil.
Care Summary for Blackjack Oak
Blackjack Oak
Greg recommends:

0.5 cups every 9 days

< 1ft from a window

Repot after 2x growth
Based on the 4ā pot your plant is in, and that it doesnāt get direct sunlight.
