Species blackjack oak

blackjack oak

Quercus marilandica

The blackjack oak (Quercus marilandica) is a large tree with an interesting history. It has wide-reaching branches which form an irregular and often gnarled silhouette. The bark is thick, dark and furrowed, and the acorns are small and dark brown. The leaves are dark green and oblong in shape, with curved lobes and a toothed edge. Blackjack oak is found all throughout the Eastern United States, growing in dry and sandy soils in areas of oak savanna and woodland, and can tolerate moderate drought. It is often used in landscaping for its distinctive look and also houses a plethora of wildlife species.

Cycle:

Perennial

Watering:

Minimum

Propagation:

Seed Propagation,Seed Propagation,Seed Propagation,Grafting Propagation,Layering Propagation,Cutting

Hardiness Zone:

6 - 9

Flowers:

Flowers In Spring

Sun:

Full sun

Fruits:

green,brown,gray,black,gray Fruits Ready In Fall

Leaf:

Yes

Leaf Color:

green,red,yellow,orange

Growth Rate:

Low

Maintenance:

Low

Drought Tolerant:

Yes

Salt Tolerant:

Yes

Care Level:

Medium

watering

Blackjack Oak should be watered deeply once a week, preferably in the morning. Try to avoid getting the leaves wet, as this can lead to disease. It is also important not to water too much, as overwatering can cause the roots to “drown” in the soil. If you are unsure of how much to water, then it is best to stick to watering deeply once a week. During periods of extreme heat, the tree may need to be watered twice a week.

sunlight

Blackjack Oak (Quercus marilandica) is native to Eastern North America and grows in areas with full to partial sunlight. This species of Oak tree prefers to be in the sun for 6-8 hours every day. When planted in sunnier locations, it will grow faster and provide more shade than when planted in shadier areas. Additionally, Blackjack Oak tolerates periods of drought well. If placed in an area with too little sunlight, the tree may not thrive, and may fail to produce acorns, the Blackjack Oak's edible fruit.

pruning

Blackjack oak (Quercus marilandica) should be pruned during the late winter or early spring when the tree is in a dormant state. Pruning should be done sparingly and carefully to reduce the chance of shock and damage to the tree. Remove only dead, damaged, or diseased branches, as well as any branches that are crossing, competing, or rubbing against each other, or are growing in an undesirable shape. Be sure to take caution not to remove more than 1-fourth of the tree’s foliage at a time.

Season

Fall
Winter
Spring
Summer
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Harvest Fruit

The harvesting season for Quercus marilandica typically begins in late summer, usually in August or September.

Starts Flowering

Blackjack oak typically starts flowering in April.

Harvest Fruit

The harvesting season for Quercus marilandica typically begins in late summer, usually in August or September.

Hardiness Map