Skip to content

Seed of the Week: Common Buckthorn

Craig and Sara recognized our mystery seeds from last week as buckthorn. In fact they are from the common buckthorn, Rhamnus cathartica.

buckthorn-forest

Common buckthorn is a small weedy tree. It is originally from the Old World, and can form dense stands that shade out indigenous plants here in North America.

buckthorn-trees

Fortunately buckthorns are not long-lived trees.

buckthorn-rust

They are also carry, and are susceptible to, rust diseases.

Rhamnus_cathartica(Illustration from Wikimedia is in the public domain.)

Common buckthorns have inconspicous white flowers that ripen into black berries after pollination.

buckthorn-berries

It is said that birds eat the berries, but they are toxic to mammals, including humans.

buckthorn-leaves-more

A related plant, Rhamnus frangula or glossy buckthorn, is also from the Old World and looks similar to the common buckthorn. The margins of the glossy buckthorn leaves are entire, which means they lack the serrations or teeth along the edge you can see in the common buckthorn leaves in this photograph (click on center "fruit" photograph here for a clear look at a glossy buckthorn leaf).

Both common and glossy buckthorns have a negative reputation. Do common buckthorns have any redeeming qualities? What do you think?

 

1 thought on “Seed of the Week: Common Buckthorn

  1. Mark Cachia

    One of my hobbies is making walking sticks,canes and staffs.There is plenty of Buckthorn within a five minute walk of where I live in Guelph Ontario.The wood is hard and yellow and can be carved without too much effort.Plus, every time I hack away at one of these trees,I feel at least I'm doing something to eradicate this menace,as small a part as it may be.

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.