Monday, October 31, 2022

2022 Acorn Watch: Blackjack Oak (Quercus marilandica)

 

This week in the arboretum, have a look at our diminutive blackjack oak (Quercus marilandica). Its leaves are changing colors, and you can examine its ripening acorns. The acorns may very well drop in the next few days.


You can find this blackjack oak on the grassy slope near Cline Hall. It grows by itself, in full sun, and it is clearly labeled with a sign.

 

Although it is more than 25 years old, this tree remains relatively small. Approximately two decades ago, vandals broke the trunk off down to the ground. The tree defiantly re-sprouted and was then replanted in a different location, and despite that difficult life history it appears to be in good health.

 

However, looking at the above photograph, on the right side of the trunk, we see that the base is malformed. Even though this tree resprouted, it sustained a permanent injury from the act of vandalism. It may also be the case that this tree is stunted. Today, it stands at a height of 7 feet, 8 inches.

 

It's short, but still producing acorns! And since the tree is small, we can easily observe the little gems. This week they are turning brown.

Ripening blackjack oak acorn, pictured October 30, 2022

 

You can see an old fall foliage picture of this individual here.

For additional information about this individual and for spring time photos, click here.